tissue vs animal tissue

tissue and animal tissue both are nouns.

Word	Noun	Adjective	Verb	Adverb
tissue	Yes	No	Yes	No
animal tissue	Yes	No	No	No

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

tissue: part of an organism consisting of an aggregate of cells having a similar structure and function
animal tissue: the tissue in the bodies of animals

Other hyponyms of tissue include band, isthmus.

tissue (noun)	animal tissue (noun)
part of an organism consisting of an aggregate of cells having a similar structure and function	the tissue in the bodies of animals
a soft thin (usually translucent) paper

tissue (verb)	animal tissue (verb)
create a piece of cloth by interlacing strands of fabric, such as wool or cotton