borstal vs training school

borstal and training school both are nouns.

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

As nouns, training school is a hypernym of borstal; that is, training 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
training school: correctional institution for the detention and discipline and training of young or first offenders

Other hypernyms of borstal include reform school, reformatory.

borstal (noun)	training 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
	a school providing practical vocational and technical training