A hidden comparison is called B. metaphor.
If you say - Those two suns peered deep into my soul, where by suns you mean eyes, then it is a metaphor. A metaphor is comparison where you don't use words such as like, or as.
Simile uses words like or as: She runs fast like the wind
Alliteration is the repetition of the same consonant
Personification is when non-human entities have human qualities, such as: The cloud is crying
