youth hostel vs lodging

youth hostel and lodging both are nouns.

Word	Noun	Adjective	Verb	Adverb
youth hostel	Yes	No	No	No
lodging	Yes	No	No	No

As nouns, lodging is a hypernym of youth hostel; that is, lodging is a word with a broader meaning than youth hostel:

youth hostel: inexpensive supervised lodging (especially for youths on bicycling trips)
lodging: structures collectively in which people are housed

Other hypernyms of youth hostel include housing, living accommodations.

youth hostel (noun)	lodging (noun)
inexpensive supervised lodging (especially for youths on bicycling trips)	the act of lodging
	structures collectively in which people are housed
	the state or quality of being lodged or fixed even temporarily