layer vs anatomical structure

layer and anatomical structure both are nouns.

Word	Noun	Adjective	Verb	Adverb
layer	Yes	No	Yes	No
anatomical structure	Yes	No	No	No

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

layer: thin structure composed of a single thickness of cells
anatomical structure: a particular complex anatomical part of a living thing and its construction and arrangement

Other hypernyms of layer include bodily structure, body structure, complex body part, structure.

layer (noun)	anatomical structure (noun)
thin structure composed of a single thickness of cells	a particular complex anatomical part of a living thing and its construction and arrangement
a hen that lays eggs
single thickness of usually some homogeneous substance
an abstract place usually conceived as having depth
a relatively thin sheetlike expanse or region lying over or under another

layer (verb)	anatomical structure (verb)
make or form a layer