In literature, mood is a literary element that evokes certain feelings or vibes in readers through words and descriptions. We can also say that the mood is the emotional setting of the piece or its atmosphere (the emotions that surround the story or poem). So, the definition that best describes mood in poetry is the emotional quality of a literary work.
Thinking the world is innocent is better then knowing what actually goes on
Sometimes, poems use a word that has several synonyms. When reading a poem and when analyzing the writing, you should check the definition of the word based on how it was used in the poem. Always remember that there are words that could mean a different thing when used.