caste vs socio-economic class

caste and socio-economic class both are nouns.

Word	Noun	Adjective	Verb	Adverb
caste	Yes	No	No	No
socio-economic class	Yes	No	No	No

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

Other hypernyms of caste include class, social class, stratum.

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

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

Other hypernyms of caste include class, social class, stratum.

caste (noun)	socio-economic 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