stratum vs organism

stratum and organism both are nouns.

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

stratum (noun)	organism (noun)
an abstract place usually conceived as having depth	a living thing that has (or can develop) the ability to act or function independently
a subpopulation divided into a stratified sampling	a system considered analogous in structure or function to a living body
people having the same social, economic, or educational status
one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)