False cognates are pairs of words in the same or different languages that are similar in form and meaning but have different roots. That is, they appear to be, or are sometimes considered, cognates, when in fact they are not.
pepper (n.) Old English pipor, from an early West Germanic borrowing of Latin piper "pepper," from Greek piperi, probably (via Persian) from Middle Indic pippari, from Sanskrit pippali "long pepper." The Latin word is the source of German Pfeffer, Italian pepe, French poivre, Old Church Slavonic pipru, Lithuanian pipiras, Old Irish piobhar, Welsh pybyr, etc. Application to fruits of the capsicum family (unrelated, originally native of tropical America) is 16c. pepper (v.) "to sprinkle as with pepper," 1610s, from pepper (n.). Old English had gepipera. Meaning "to pelt with shot, etc." is from 1640s. Related: Peppered; peppering.
Definition via Online Etymology Dictionary
Comic via Wondermark