cellulite vs fatty tissue

cellulite and fatty tissue both are nouns.

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

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

cellulite: lumpy deposits of body fat especially on women's thighs etc.
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 cellulite include adipose tissue, fat.

cellulite (noun)	fatty tissue (noun)
lumpy deposits of body fat especially on women's thighs etc.	a kind of body tissue containing stored fat that serves as a source of energy; it also cushions and insulates vital organs