hackwork vs codswallop

hackwork and codswallop both are nouns.

Word	Noun	Adjective	Verb	Adverb
hackwork	Yes	No	No	No
codswallop	Yes	No	No	No

As nouns, codswallop is a hypernym of hackwork; that is, codswallop is a word with a broader meaning than hackwork:

hackwork: (Literary & Literary Critical Terms) undistinguished literary work produced to order.
codswallop: nonsensical talk or writing

Other hypernyms of hackwork include applesauce, folderol, rubbish, trash, tripe, trumpery, wish-wash.

hackwork (noun)	codswallop (noun)
professional work done according to formula	nonsensical talk or writing
(Literary & Literary Critical Terms) undistinguished literary work produced to order.