false cognates
Definition - Similar words in different languages that appear to have a common etymology but in fact do not.
Note: As opposed to false friends, which are pairs of words in two languages or dialects that look and/or sound similar but have different meanings.

Example -
"The word for dog in the Australian Aboriginal language Mbabaram happens to be dog, although there is no common ancestor or other connection between that language and English (the Mbabaram word evolved regularly from a protolinguistic form *gudaga)."
(Source: Wikipedia s.v. false cognates)

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