biopsy vs needle biopsy

biopsy and needle biopsy both are nouns.

Word	Noun	Adjective	Verb	Adverb
biopsy	Yes	No	No	No
needle biopsy	Yes	No	No	No

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

biopsy: examination of tissues or liquids from the living body to determine the existence or cause of a disease
needle biopsy: biopsy of deep tissue that is obtained through a hollow needle

Other hyponyms of biopsy include blood test, chorionic villus biopsy, chorionic villus sampling.

biopsy (noun)	needle biopsy (noun)
examination of tissues or liquids from the living body to determine the existence or cause of a disease	biopsy of deep tissue that is obtained through a hollow needle