False friend ·Cognate bridge ES looks like EN
pluma
ES [ˈpluma] · Spanish for “feather” or “pen” · looks like English plum
English eye reads a plum - the fruit Actually pluma - a feather, or a pen
Pluma looks like it ought to be a fruit. To an English eye it reads as plum - but in Spanish it means feather, and from there a pen (the first pens were cut from quills, after all).
Why it happens
The look-alike is a decoy. Spanish pluma comes from Latin pluma, “feather,” and a pen earns the name because the earliest ones were cut from quills. English plum is a separate word altogether, tracing to Latin prunum - the same source as prune. So pluma's actual English relative isn't plum at all; it's plume, the feather in a hat, and plumage on a bird. The fruit just showed up wearing a similar coat.