A figure of speech is the use of a word or a phrase, which transcends its literal interpretation. It can be a special repetition, arrangement or omission of words with literal meaning, or a phrase with a specialized meaning not based on the literal meaning of the words in it, as in idiom, metaphor, simile, hyperbole, personification, or synedoche. Figures of speech often provide emphasis, freshness of expression, or clarity.
It's basically idioms; Personification, metaphor and the likes, you can have futher information on google.

The types of figure of speech would be simile (ex. I am like a butterfly/ I am as wise as an owl) metaphor (I am the Samsom of our University-- note, in metaphor, there's no use of like or as) Personification is simply giving life to a non-living thing, example ' the tree talked to me'. And last from what I know, is the hyperbola where exaggeration is always present 'The ball bounced back into the universe"