checkroom vs left-luggage office

checkroom and left-luggage office both are nouns.

Word	Noun	Adjective	Verb	Adverb
checkroom	Yes	No	No	No
left-luggage office	Yes	No	No	No

As nouns, checkroom and left-luggage office are synonyms defined as:

checkroom and left-luggage office: a room where baggage or parcels are checked

checkroom (noun)	left-luggage office (noun)
a room where baggage or parcels are checked	a room where baggage or parcels are checked