Yes!
The phrase "they plodded along on leaden feet" is a metaphor. It compares the heaviness of their steps to the weight of lead, suggesting a slow and laborious movement.
The phrase "the moon is a balloon" is an example of a direct metaphor. A direct metaphor is a direct comparison of two things.
It is a metaphor that has lost its original meaning because of regular and repetitive use. This can also be caused by the evolution of language. An example might be that 'the telephone is ringing' a phrase still used a because original telephones contained bells.
yes
the book itself? or the phrase "slippery slope"? the phrase is not
metephor
The phrase his anger is a gale force is an example of a metaphor.
The phrase his anger is a gale force is an example of a metaphor.
Metaphor. This phrase is a metaphor that suggests the person is arrogant or conceited, comparing their apparent inflated ego to an actual physical swelling of the head.
no
Neither