join vs piece

join and piece both are nouns.

Word	Noun	Adjective	Verb	Adverb
join	Yes	No	Yes	No
piece	Yes	No	Yes	No

As verbs, piece is a hyponym of join; that is, piece is a word with a more specific, narrower meaning than join:

As verbs, piece is a hyponym of join; that is, piece is a word with a more specific, narrower meaning than join:

join (noun)	piece (noun)
a set containing all and only the members of two or more given sets	a separate part of a whole
the shape or manner in which things come together and a connection is made	game equipment consisting of an object used in playing certain board games
	a portable gun
	a work of art of some artistic value
	an item that is an instance of some type
	a distance
	a musical work that has been created
	an artistic or literary composition
	an instance of some kind
	a serving that has been cut from a larger portion
	a portion of a natural object
	a share of something
	a period of indeterminate length (usually short) marked by some action or condition

join (verb)	piece (verb)
make contact or come together	repair by adding pieces
cause to become joined or linked	eat intermittently; take small bites of
become part of; become a member of a group or organization	join during spinning
come into the company of	to join or unite the pieces of
be or become joined or united or linked	create by putting components or members together