caste vs social class

caste and social class both are nouns.

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

As nouns, social class is a hypernym of caste; that is, social class 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
social class: people having the same social, economic, or educational status

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

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

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

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

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