aide vs AIS, What's the Difference?

Which to use

“aide” and “AIS” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#11,335
“aide” frequency rank: #26,670
“AIS” frequency rank: 38005
confusion score

Side-by-Side Comparison

Feature	aide	AIS
Definition	An assistant.	Initialism of automatic identification system, as an element of the Global Marine Distress and Safety System GMDSS.

Where the eye mixes aide and AIS

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch

aide

3 ch

AIS

Visual trap between aide and AIS

A purely visual mix-up. aide (/eɪd/) and AIS (/ˈeɪ ˈaɪ ˈɛs/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 38005, derived from the frequency rank of both members and their visual similarity.

aide is recorded at frequency rank #11,335, classified as anoun, pronounced /eɪd/. AIS is at rank #26,670, tagged as anoun, pronounced /ˈeɪ ˈaɪ ˈɛs/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 38005, this pair ranks #289,670 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of aide vs AIS

Shared letters: ai. Private to "aide": de. Private to "AIS": s.

"aide" · 4 letters · shape VVCV · "AIS" · 3 letters · shape VVC

Known mistypes of this pair

aide ← adie · aied · iade

Frequently Asked Questions

Is swapping "aide" for "AIS" ever safe?

No. They are said differently (/eɪd/ versus /ˈeɪ ˈaɪ ˈɛs/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "aide" or "AIS"?

"aide" is the more common of the two: it sits at frequency rank #11,335 in our English list, against #26,670 for "AIS". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

Full dictionary entry for "aide" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "AIS" - compare definitions side by side with the headword page. Word entry
This pair ranks #289,670 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"aide" and "AIS" also get mixed up with nearby pairs, the highest-scored neighbour is "AIS vs amb". Nearby pair
Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #289,670 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.