Metaphor on its own is a comparison (without using words such as like or as). However, when that comparison spreads throughout a text or a poem, it is referred to as extended metaphor.
Attitude is your tone; connotation refers to your thoughts and opinions about a particular word; figurative meaning is the use of figures of speech, such as metaphor, hyperbole, etc.
An extended metaphor refers to a comparison over the course of the poem. It may be a sentence or a group of words that are unlikely and are linked together all throughout the poem. It could also be a full paragraph.
