False Cognates (False Friends)

False friend alert: "actual" ≠ "current" or "latest"
In English, actual means real, genuine, or true — often used for emphasis or contrast: "The actual problem is deeper than it looks." "I thought it would take a week, but the actual time was three weeks." It does NOT mean "current" or "up-to-date."

Many languages have a false cognate that means "current": Ukrainian актуальний, Russian актуальный, Spanish actual, German aktuell, French actuel, Italian attuale — all mean "current, up-to-date."

Correct versions:
✅ "The current API version is 2.3"
✅ "The latest version is 2.3"
✅ "As of today, the API is on version 2.3"

The word "actual" can be used naturally: "The actual bug was in the cache layer" (= the true/real bug, not what we thought).

False friend alert: "realize" ≠ "implement/build"
In English, realize means to become aware of or understand suddenly: "I realized there was a bug." "She realized the deadline had passed."

The false cognate: German realisieren, French réaliser, Spanish realizar, Italian realizzare — all mean "to implement, build, or carry out." This is a systematic error that affects many European non-native speakers.

Correct alternatives for "we built it":
✅ "We implemented the authentication feature"
✅ "We built / developed / shipped / delivered the feature"
✅ "We completed the authentication work"

You can use "realize" in a different sense: "We realized the potential of the new architecture" (= made potential become actual). But in everyday tech communication, stick to "implement" or "build."

"Sensible" vs. "sensitive" — two similar words with different meanings
Sensible = reasonable, practical, showing good judgment: "That's a sensible solution." "A sensible default is to fail loudly." "Sensible architecture decisions make the codebase easier to change."

Sensitive = (1) responsive to slight changes: "sensitive data," "a sensitive configuration parameter"; (2) emotionally affected: "she's sensitive about deadlines"; (3) confidential/private: "sensitive user information."

Common confusions in IT context:
❌ "This data is very sensible" → means it's reasonable, not private
✅ "This data is very sensitive" → correct for private/confidential data

❌ "Use sensible timeout values for the network calls" → this is actually OK! "sensible" = reasonable values
✅ "Sensitive timeout values" → would mean fragile/easily affected values

The PR comment in the question is correct — saying an approach is "sensible" means it's well-reasoned and practical.

False friend: "control" ≠ "check/verify"
In English, control as a verb means to regulate, manage, or have authority over something: "Access control", "version control", "control the flow of data." It does NOT mean "check" or "verify."

The false cognate: German kontrollieren, French contrôler, Spanish controlar, and many other European languages all use a "control" equivalent to mean "check" or "inspect." This creates systematic errors from many native speakers.

Correct alternatives:
✅ "Please check the log output after each test case"
✅ "Please verify / review / inspect the log output"
✅ "Please examine the log output"

"Control" in correct usage: "Access controls ensure only authorized users can read the data." "Version control tracks changes to the codebase." "We need to control the rate of API requests."

"Eventually" — correct here, but watch the false friend trap
In English, eventually = at some point in the future; after some time; sooner or later. It is correct in the sentence above: "We can add this feature later, at some unspecified future point."

The false friend trap: Spanish/Portuguese eventual / Italian eventuale / French éventuel mean "possible, potential, or contingent." This leads to errors like:
❌ "An eventual error could cause data loss" (meant: "A possible error…")
✅ "A possible / potential error could cause data loss"

Warning for IT context: "eventual consistency" is a valid and common IT term (a consistency model in distributed systems where all replicas eventually converge to the same state). Do NOT confuse this with a false friend usage — "eventual consistency" uses "eventual" correctly in English (= will happen at some point).

Summary: "eventually" (adverb) ✅ correct English. "eventual" (adjective) ✅ exists in English but rare — prefer "possible," "potential," "future," or "eventual consistency" only in its specific technical meaning.

"Implement" as a noun — an almost invisible false friend trap.

In everyday English, "implement" can technically be a noun meaning a hand tool or instrument (a farming implement, a kitchen implement). But in modern IT English, this usage is essentially never used.

The error: Non-native speakers (especially from Slavic languages) sometimes use "implement" as if it were a direct translation of the noun form (e.g., Ukrainian імплемент / реалізація, Russian реализация). But native English speakers in IT always use the noun form:

Correct substitutions:

• "We need a new implementation for handling OAuth tokens." ✅
• "We need a new mechanism / component / library / module." ✅
• "We need to implement a new OAuth token handler." ✅ (using implement as a verb)

The verb "implement" is used constantly and is correct:

• "We need to implement OAuth." ✅
• "I implemented the caching layer." ✅
• "The feature has been implemented." ✅

Memory rule: "implement" is almost always a verb in IT English. When you need the noun — use implementation, or a more specific noun (component, module, solution, handler, service).

Both are used correctly — but these words are frequently confused by non-native speakers.

perspective (noun) = a point of view; the way someone sees or understands something

• "From my perspective, this approach has risks." ✅ (= in my opinion / from my point of view)
• "From a technical perspective, the solution is sound." ✅
• "We need to consider the user's perspective." ✅
• Plural: "different perspectives" = different points of view

prospect(s) (noun) = a future possibility; likelihood; potential for something to happen

• "The prospects for this project are excellent." ✅ (= future chances of success)
• "Career prospects" ✅ = future career opportunities
• "There's a prospect of a promotion." ✅ (= a possibility/chance)

The common non-native confusion: In many languages, the word for "perspective" and "prospect/outlook" can overlap or be translated by the same word (e.g., Ukrainian перспектива = both "perspective" and "prospect/outlook"). In English, they are distinct:

• perspective = point of view (NOW)
• prospect = future possibility (FUTURE)

Common mistakes:
❌ "The perspective for the company is good." → ✅ "The prospects for the company are good."
❌ "From my prospects, this is risky." → ✅ "From my perspective, this is risky."