tom vs TOS, What's the Difference?

Which to use

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

#1,582
“tom” frequency rank: #19,720
“TOS” frequency rank: 21302
confusion score

Side-by-Side Comparison

Feature	tom	TOS
Definition	The male of the domesticated cat, especially if not neutered.	Initialism of terms of service.

Where the eye mixes tom and TOS

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

3 ch

tom

3 ch

TOS

Visual trap between tom and TOS

A purely visual mix-up. tom (/tɒm/) and TOS (/tiː əʊ ɛs/) 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 a single letter - m in “tom” becomes s in “TOS”. Our composite confusion score for this pair is 21302, derived from the frequency rank of both members and their visual similarity.

tom is recorded at frequency rank #1,582, classified as anoun, pronounced /tɒm/. TOS is at rank #19,720, tagged as anoun, pronounced /tiː əʊ ɛs/.

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 21302, this pair ranks #424,861 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of tom vs TOS

Shared letters: ot. Private to "tom": m. Private to "TOS": s.

"tom" · 3 letters · shape CVC · "TOS" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "tom" for "TOS" ever safe?

No. They are said differently (/tɒm/ versus /tiː əʊ ɛs/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Frequency check: "tom" vs "TOS" - which ranks higher?

"tom" is the more common of the two: it sits at frequency rank #1,582 in our English list, against #19,720 for "TOS". 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 "tom" and "TOS" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "tom" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "TOS" - compare definitions side by side with the headword page. Word entry
This pair ranks #424,861 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"tom" and "TOS" also get mixed up with nearby pairs, the highest-scored neighbour is "Taf vs TOS". Nearby pair

Confusion rank #424,861 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.