stratum vs social class

stratum and social class both are nouns.

Word	Noun	Adjective	Verb	Adverb
stratum	Yes	No	No	No
social class	Yes	No	No	No

As nouns, stratum and social class are synonyms defined as:

stratum and social class: people having the same social, economic, or educational status

Other synonyms of stratum include class, socio-economic class.

stratum (noun)	social class (noun)
an abstract place usually conceived as having depth	people having the same social, economic, or educational status
a subpopulation divided into a stratified sampling
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)