▁enough ▁to ▁know ▁that ▁a ▁word ▁is ▁used ▁in ▁the ▁same ▁sense ▁in ▁the ▁query ▁and ▁a ▁retrieved ▁document ; ▁what ▁sense ▁that ▁is , ▁is ▁un important . ▁ ▁Dis cre ten ess ▁of ▁sens es ▁Finally , ▁the ▁very ▁notion ▁of ▁" word ▁sense " ▁is ▁sli pp ery ▁and ▁controvers ial . ▁Most ▁people ▁can ▁agree ▁in ▁dist in ctions ▁at ▁the ▁co arse - gra ined ▁hom ograph ▁level ▁( e . g ., ▁pen ▁as ▁writing ▁instrument ▁or ▁en closure ), ▁but ▁go ▁down ▁one ▁level ▁to ▁fine - gra ined ▁pol ys emy , ▁and ▁disag re ements ▁arise . ▁For ▁example , ▁in ▁S ense val - 2 , ▁which ▁used ▁fine - gra ined ▁sense ▁dist in ctions , ▁human ▁annot ators ▁agreed ▁in ▁only ▁ 8 5 % ▁of ▁word ▁occurr ences . ▁Word ▁meaning ▁is ▁in ▁principle ▁infinitely ▁variable ▁and ▁context ▁sensitive . ▁It ▁does ▁not ▁divide ▁up ▁easily ▁into ▁distinct ▁or ▁discrete ▁sub - mean ings . ▁Lex ic ograph ers ▁frequently ▁discover ▁in ▁corpor a ▁loose ▁and ▁over la pping ▁word ▁mean ings , ▁and ▁standard ▁or ▁conventional ▁mean ings ▁extended , ▁mod ulated , ▁and ▁explo ited ▁in ▁a ▁bew ilder ing ▁variety ▁of ▁ways . ▁The ▁art ▁of ▁lex ic ography ▁is ▁to ▁general ize ▁from ▁the ▁cor pus ▁to ▁definitions ▁that ▁e voke ▁and ▁explain ▁the ▁full ▁range ▁of ▁meaning ▁of ▁a ▁word , ▁making ▁it ▁seem ▁like ▁words ▁are ▁well - be hav ed ▁sem ant ically