interstice vs body structure

interstice and body structure both are nouns.

Word	Noun	Adjective	Verb	Adverb
interstice	Yes	No	No	No
body structure	Yes	No	No	No

As nouns, body structure is a hypernym of interstice; that is, body structure is a word with a broader meaning than interstice:

interstice: a small structural space between tissues or parts of an organ
body structure: a particular complex anatomical part of a living thing and its construction and arrangement

Other hypernyms of interstice include anatomical structure, bodily structure, complex body part, structure.

interstice (noun)	body structure (noun)
small opening between things	a particular complex anatomical part of a living thing and its construction and arrangement
a small structural space between tissues or parts of an organ