fat cell vs somatic cell

fat cell and somatic cell both are nouns.

Word	Noun	Adjective	Verb	Adverb
fat cell	Yes	No	No	No
somatic cell	Yes	No	No	No

As nouns, somatic cell is a hypernym of fat cell; that is, somatic cell is a word with a broader meaning than fat cell:

fat cell: cells composed of fat
somatic cell: any of the cells of a plant or animal except the reproductive cells; a cell that does not participate in the production of gametes

Other hypernyms of fat cell include vegetative cell.

fat cell (noun)	somatic cell (noun)
cells composed of fat	any of the cells of a plant or animal except the reproductive cells; a cell that does not participate in the production of gametes