purpose of techniques (1 Viewer)

[xeriphic]

I was just studying the techniques that is used in different text types and even though I know what each are used for though I really can't seem to know the purpose for some of those techniques (ie. how they are effective in conveying eaning), if anyone could help that would be great thanks

hyperbole
facial expression
cliche
irony
diction
similie
metaphor
personification
oxymoron
juxtaposition
rhetorical questions
pun