My teacher said that they are a poem or saying that is a puzzle that you have to figure out
It's not a poetic, its poetic. Poetic means terms used in poems such as stanza.
something we don't understand
'Smoke and mirrors' or 'the blood jets rush'. Answer. A poetic term is one that shows, rather than tells, and has soul to it.
When words have a similarity at their endings. It is the vowel sound that sounds identical to each other and concludes the word.