caseworker vs almoner

caseworker and almoner both are nouns.

Word	Noun	Adjective	Verb	Adverb
caseworker	Yes	No	No	No
almoner	Yes	No	No	No

As nouns, almoner is a hyponym of caseworker; that is, almoner is a word with a more specific, narrower meaning than caseworker:

caseworker: someone employed to provide social services (especially to the disadvantaged)
almoner: an official in a British hospital who looks after the social and material needs of the patients

Other hyponyms of caseworker include medical social worker.

caseworker (noun)	almoner (noun)
someone employed to provide social services (especially to the disadvantaged)	an official in a British hospital who looks after the social and material needs of the patients