socket vs ball-and-socket joint

socket and ball-and-socket joint both are nouns.

Word	Noun	Adjective	Verb	Adverb
socket	Yes	No	No	No
ball-and-socket joint	Yes	No	No	No

socket (noun)	ball-and-socket joint (noun)
a receptacle into which an electric device can be inserted	a joint that can rotate within a socket
receptacle where something (a pipe or probe or end of a bone) is inserted	a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone
a bony hollow into which a structure fits