there's vs theses, What's the Difference?

Which to use

“there's” is a contraction and “theses” is a noun - they look or sound alike but fill different roles in a sentence.

#267
“there's” frequency rank: #22,243
“theses” frequency rank: 22510
confusion score

Side-by-Side Comparison

Feature	there's	theses
Definition	Contraction of there is.	plural of thesis

Where the spellings diverge

Shared letters are muted; the letters that actually set there's and theses apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.

7 ch

there's

6 ch

theses

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: there's is /ðəɹz/ while theses is /ˈθiːsiːz/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (contraction vs noun), which is usually the fastest check. Our composite confusion score for this pair is 22510, derived from the frequency rank of both members and their visual similarity.

there's is recorded at frequency rank #267, classified as acontraction, pronounced /ðəɹz/. theses is at rank #22,243, tagged as anoun, pronounced /ˈθiːsiːz/.

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 22510, this pair ranks #416,060 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of there's vs theses

Shared letters: ehst. Private to "there's": r. Private to "theses": -.

"there's" · 6 letters · shape CCVCVC · "theses" · 6 letters · shape CCVCVC

Known mistypes of this pair

theses ← hteses · tehses · theess · thesess · thesses · thheses · thsees · ttheses

Frequency comparison

there's#267

theses#22,243

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "there's" and "theses" be used interchangeably?

No - they are not even the same part of speech. "there's" is a contraction and "theses" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "there's" or "theses"?

"there's" is the more common of the two: it sits at frequency rank #267 in our English list, against #22,243 for "theses". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering there's vs theses

The fastest way to pick the right one every time.

Check the role first: if you need a contraction, it's “there's”; for a noun, it's “theses”.
See each word in full, definition, IPA, etymology and its other confusables. Full “there's” entry
Browse more pairs most likely to be confused. Most confusable