Word Net superficially resembles a thesaurus, in that it groups words together based on their meanings. First, Word Net interlinks not just word forms—strings of letters—but specific senses of words.As a result, words that are found in close proximity to one another in the network are semantically disambiguated.Thus, armchair is a type of chair, Barack Obama is an instance of a president.
Verb synsets are arranged into hierarchies as well; verbs towards the bottom of the trees (troponyms) express increasingly specific manners characterizing an event, as in --.
The specific manner expressed depends on the semantic field; volume (as in the example above) is just one dimension along which verbs can be elaborated.
Others are speed (move-jog-run) or intensity of emotion (like-love-idolize).
Semantically similar adjectives are “indirect antonyms” of the contral member of the opposite pole.
Relational adjectives ("pertainyms") point to the nouns they are derived from (criminal-crime).