consisting of or characterized by the telling of a story
Narrative poetry is poetry that tells a story and includes the same literary elements as narrative prose such as short stories and novels: plot, setting, character, speaker...
taking someone's words or ideas as if they were your own
If you do not credit sources accurately, you commit the serious offense of plagiarism, presenting someone else's work as your own. Plagiarism is stealing someone else's ideas, so it is both illegal and dishonest.