Homonym
Two, or more, meanings maz be associated with the same form: in which case the words are homonyms.
Example
bank
(i) 'of a river'
(ii) 'for the deposit of money'
Subtypes
Other languages
Chinese 同音同形异义词
German Hononym (de)
Reference
Lyons, John. 1968. Introduction to Theoretical Linguistics. Cambridge: Cambridge University Press.