n. 同形异义字

[ noun ]
two words are homographs if they are spelled the same way but differ in meaning (e.g. fair)
<noun.communication>

Homograph \Hom"o*graph\, n. [Gr. "omo`grafos with the same
letters; "omo`s the same + gra`fein to write.] (Philol.)
One of two or more words identical in orthography, but having
different derivations and meanings; as, fair, n., a market,
and fair, a., beautiful.