cat vs com, What's the Difference?

Which to use

“cat” is a noun and “com” is a preposition - they look or sound alike but fill different roles in a sentence.

#7,740
“cat” frequency rank: #14
“com” frequency rank: 7754
confusion score

Side-by-Side Comparison

Feature	cat	com
Definition	gato (Felis catus)	indica várias relações: companhia, causa, instrumento, ligação, modo, oposição

Where the eye mixes cat and com

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch

cat

3 ch

com

Visual trap between cat and com

These two trip readers on the page rather than in the ear: cat is /kʰaʰt̪/ while com is /kõ/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 7754, derived from the frequency rank of both members and their visual similarity.

cat is recorded at frequency rank #7,740, classified as anoun, pronounced /kʰaʰt̪/. com is at rank #14, tagged as aprep, pronounced /kõ/.

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 7754, this pair ranks #66,298 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of cat vs com

Shared letters: c. Private to "cat": at. Private to "com": mo.

"cat" · 3 letters · shape CVC · "com" · 3 letters · shape CVC

Frequently Asked Questions

Do "cat" and "com" mean the same thing in a sentence?

No - they are not even the same part of speech. "cat" is a noun and "com" a preposition, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "cat" or "com"?

"com" is the more common of the two: it sits at frequency rank #14 in our Portuguese list, against #7,740 for "cat". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Eye-level mix-up between "cat" and "com" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "cat" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "com" - compare definitions side by side with the headword page. Word entry
This pair ranks #66,298 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"cat" and "com" also get mixed up with nearby pairs, the highest-scored neighbour is "cat vs chau". Nearby pair

Confusion rank #66,298 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.