beads vs rosary

beads and rosary both are nouns.

Word	Noun	Adjective	Verb	Adverb
beads	Yes	No	No	No
rosary	Yes	No	No	No

As nouns, rosary is a hyponym of beads; that is, rosary is a word with a more specific, narrower meaning than beads:

beads: several beads threaded together on a string
rosary: a string of beads used in counting prayers (especially by Catholics)

Other hyponyms of beads include prayer beads, peag, wampum, wampumpeag.

beads (noun)	rosary (noun)
several beads threaded together on a string	a string of beads used in counting prayers (especially by Catholics)