For example, 'hard disk' and 'disk' have the same hypernym 'storage device'; similarly 'soft drink' and 'drink' have 'product'; 'hard drive' and 'drive' have 'device'.
these non-compositional cases are different from entirely opaque expressions like 'couch potato', 'hot dog' where none of the hypernyms of the noun phrases match with the hypernyms of any of the constituent words.