paunch vs fatty tissue

paunch and fatty tissue both are nouns.

Word	Noun	Adjective	Verb	Adverb
paunch	Yes	No	No	No
fatty tissue	Yes	No	No	No

As nouns, fatty tissue is a hypernym of paunch; that is, fatty tissue is a word with a broader meaning than paunch:

paunch: a protruding abdomen
fatty tissue: a kind of body tissue containing stored fat that serves as a source of energy; it also cushions and insulates vital organs

Other hypernyms of paunch include adipose tissue, fat.

paunch (noun)	fatty tissue (noun)
a protruding abdomen	a kind of body tissue containing stored fat that serves as a source of energy; it also cushions and insulates vital organs