muscle fiber vs vegetative cell

muscle fiber and vegetative cell both are nouns.

Word	Noun	Adjective	Verb	Adverb
muscle fiber	Yes	No	No	No
vegetative cell	Yes	No	No	No

As nouns, vegetative cell is a hypernym of muscle fiber; that is, vegetative cell is a word with a broader meaning than muscle fiber:

muscle fiber: an elongated contractile cell that forms the muscles of the body
vegetative 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 muscle fiber include fiber, fibre, somatic cell.

muscle fiber (noun)	vegetative cell (noun)
an elongated contractile cell that forms the muscles of the body	any of the cells of a plant or animal except the reproductive cells; a cell that does not participate in the production of gametes