Feet and feat are homophones in English and can sometimes be confused; they are both pronounced /fiːt/ but have different spellings and their meanings are completely different.
feet

Feet is the plural form of the noun ‘foot’
She had aching arms and sore feet.
feat

Feat is a countable noun.
If you refer to an action, or the result of an action, as a feat, you admire it because it is an impressive and difficult achievement.
Building the pyramids of Egypt (the tallest of which was 480ft high) was an incredible feat of engineering.
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