How to know that word is a noun, verb, adjective,adverb

Noun >person, place or thing
                     >ends with suffixes such as: -s, -ment, -ness, -ery, -aire
                     >follows syntactic form: DET ___ or DET___ Adj


Verb >action,state of being
                 >ends with suffixes such as: -ed, -ing, -s, ify
                 >follows auxiliaries and modals


Adjective>Express qualities
                              >suffixes include -er, -est, -al, able,-like, -ish
                              >follows determiners, intensifiers, adverbs, and precede nouns.

Adverbs>express qualities
                           >common suffix -ly
                           >precedes adjectives and verbs