For instance, nouns are often used in the subject and object positions and thus whether we find a verb before or after the target noun or whether its previous word is a determiner may not be a very good contextual feature in general because the various senses of a given noun may all occur in such similar contexts.
if one sense of the noun tends to appear in very specific constructions, such as in very unique prepositional phrases, then in such cases one can expect local collocations and n-gram combinations to be relatively useful for distinguishing this sense from the others.