attic vs hayloft

attic and hayloft both are nouns.

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

As nouns, hayloft is a hyponym of attic; that is, hayloft is a word with a more specific, narrower meaning than attic:

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

Other hyponyms of attic include cockloft, haymow, mow.

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