caffe latte vs espresso

caffe latte and espresso both are nouns.

Word	Noun	Adjective	Verb	Adverb
caffe latte	Yes	No	No	No
espresso	Yes	No	No	No

As nouns, espresso is a hypernym of caffe latte; that is, espresso is a word with a broader meaning than caffe latte:

caffe latte: strong espresso coffee with a topping of frothed steamed milk
espresso: strong black coffee brewed by forcing hot water under pressure through finely ground coffee beans

caffe latte (noun)	espresso (noun)
strong espresso coffee with a topping of frothed steamed milk	strong black coffee brewed by forcing hot water under pressure through finely ground coffee beans