saprophyte vs organism

saprophyte and organism both are nouns.

Word	Noun	Adjective	Verb	Adverb
saprophyte	Yes	No	No	No
organism	Yes	No	No	No

As nouns, organism is a hypernym of saprophyte; that is, organism is a word with a broader meaning than saprophyte:

saprophyte: an organism that feeds on dead organic matter especially a fungus or bacterium
organism: a living thing that has (or can develop) the ability to act or function independently

Other hypernyms of saprophyte include being.

saprophyte (noun)	organism (noun)
an organism that feeds on dead organic matter especially a fungus or bacterium	a living thing that has (or can develop) the ability to act or function independently
	a system considered analogous in structure or function to a living body