borstal vs reform school

borstal and reform school both are nouns.

Word	Noun	Adjective	Verb	Adverb
borstal	Yes	No	No	No
reform school	Yes	No	No	No

As nouns, reform school is a hypernym of borstal; that is, reform school is a word with a broader meaning than borstal:

borstal: formerly a British reform school for youths considered too young to send to prison
reform school: correctional institution for the detention and discipline and training of young or first offenders

Other hypernyms of borstal include reformatory, training school.

borstal (noun)	reform school (noun)
formerly a British reform school for youths considered too young to send to prison	correctional institution for the detention and discipline and training of young or first offenders