For example, the first sense of star as derived from SemCor is celestial body, but if one were disambiguating popular news stories then celebrity would be more likely.
r Lesk's semantic similarity score (Banerjee and Pedersen 2002, lesk) produces particularly good results for nouns which have low corpus frequencies; Jiang and Conrath's (1997, jcn) score does well on higher frequency words.