Heroic verse and Heroic poem

Heroic verse noun - A verse form suited to the treatment of heroic or elevated themes; dactylic hexameter or iambic pentameter.

Heroic poem and heroic verse are semantically related. In some cases you can use "Heroic poem" instead a noun phrase "Heroic verse".

Heroic poem noun - A long narrative poem telling of a hero's deeds.

Heroic verse and heroic poem are semantically related. Sometimes you can replace phrase "Heroic verse" with "Heroic poem", this phrases are similar.