caste vs stratum

caste and stratum both are nouns.

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

As nouns, stratum is a hypernym of caste; that is, stratum is a word with a broader meaning than caste:

caste: a social class separated from others by distinctions of hereditary rank or profession or wealth
stratum: people having the same social, economic, or educational status

Other hypernyms of caste include class, social class, socio-economic class.

As nouns, stratum is a hypernym of caste; that is, stratum is a word with a broader meaning than caste:

caste: (Hinduism) a hereditary social class among Hindus; stratified according to ritual purity
stratum: people having the same social, economic, or educational status

Other hypernyms of caste include class, social class, socio-economic class.

caste (noun)	stratum (noun)
in some social insects (such as ants) a physically distinct individual or group of individuals specialized to perform certain functions in the colony	an abstract place usually conceived as having depth
a social class separated from others by distinctions of hereditary rank or profession or wealth	a subpopulation divided into a stratified sampling
(Hinduism) a hereditary social class among Hindus; stratified according to ritual purity	people having the same social, economic, or educational status
social status or position conferred by a system based on class	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)