My brain is like a bucket of knowledge
A simile.
A metaphor
Not sure what kind of answer you are looking for. In English literature, that would be considered a simile."A human brain is like a computer."Or it could be an understatement, considering the human brain is extremely powerful in ways a computer never will be.
As quick as a wink is a simile. ----
It is a simile.
As cute as a puppy as tall as a giant as big as a elephant as loud as a chimpanzee As stupid a bird's brain
simile It is an example of a simile (uses like or as). A simile in itself though is a type of metaphor.
simile
that man
It is a similie as you are comparing (something) to how sly the fox is. A similie uses the words "like or "as".
simile
simile