leiomyosarcoma vs sarcoma

leiomyosarcoma and sarcoma both are nouns.

Word	Noun	Adjective	Verb	Adverb
leiomyosarcoma	Yes	No	No	No
sarcoma	Yes	No	No	No

As nouns, sarcoma is a hypernym of leiomyosarcoma; that is, sarcoma is a word with a broader meaning than leiomyosarcoma:

leiomyosarcoma: sarcoma of smooth muscle; occurs most often digestive tract or uterus or bladder or prostate
sarcoma: a usually malignant tumor arising from connective tissue (bone or muscle etc.); one of the four major types of cancer

leiomyosarcoma (noun)	sarcoma (noun)
sarcoma of smooth muscle; occurs most often digestive tract or uterus or bladder or prostate	a usually malignant tumor arising from connective tissue (bone or muscle etc.); one of the four major types of cancer