hayloft vs attic

hayloft and attic both are nouns.

Word	Noun	Adjective	Verb	Adverb
hayloft	Yes	No	No	No
attic	Yes	No	No	No

As nouns, attic is a hypernym of hayloft; that is, attic is a word with a broader meaning than hayloft:

hayloft: a loft in a barn where hay is stored
attic: floor consisting of open space at the top of a house just below roof; often used for storage

Other hypernyms of hayloft include garret, loft.

hayloft (noun)	attic (noun)
a loft in a barn where hay is stored	floor consisting of open space at the top of a house just below roof; often used for storage
	(architecture) a low wall at the top of the entablature; hides the roof
	informal terms for a human head