study vs bone

study and bone both are nouns.

Word	Noun	Adjective	Verb	Adverb
study	Yes	No	Yes	No
bone	Yes	Yes	Yes	No

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

Other hyponyms of study include con, learn, memorise, memorize, bone up, cram, drum, get up, grind away, mug up, swot, swot up.

study (noun)	bone (noun)
a detailed critical inspection	a shade of white the color of bleached bones
a room used for reading and writing and studying	rigid connective tissue that makes up the skeleton of vertebrates
preliminary drawing for later elaboration	the porous calcified substance from which bones are made
attentive consideration and meditation
a branch of knowledge
applying the mind to learning and understanding a subject (especially by reading)
a state of deep mental absorption
a written document describing the findings of some individual or group
a composition intended to develop one aspect of the performer's technique
someone who memorizes quickly and easily (as the lines for a part in a play)

study (adjective)	bone (adjective)
	consisting of or made up of bone

study (verb)	bone (verb)
be a student of a certain subject	remove the bones from
learn by reading books	study intensively, as before an exam
consider in detail and subject to an analysis in order to discover essential features or meaning
be a student; follow a course of study; be enrolled at an institute of learning
think intently and at length, as for spiritual purposes
give careful consideration to