boss vs knob

boss and knob both are nouns.

Word	Noun	Adjective	Verb	Adverb
boss	Yes	Yes	Yes	No
knob	Yes	No	No	No

As nouns, boss and knob are synonyms defined as:

boss (noun)	knob (noun)
a circular rounded projection or protuberance	a round handle
a person responsible for hiring workers	a circular rounded projection or protuberance
a person who exercises control over workers	an ornament in the shape of a ball on the hilt of a sword or dagger
a leader in a political party who controls votes and dictates appointments	any thickened enlargement
a person who exercises control and makes decisions

boss (adjective)	knob (adjective)
exceptionally good

boss (verb)	knob (verb)
raise in a relief