Answer:
Simile
Explanation:
In figurative language, a simile is defined by comparing someone to something-- "As swift as a cheetah", "brave like a lion", or in this case, "steady as a rock".
A few words with the prefix pater/part are:
patriarch - head of the household
paternal - relating to the father
paternity - test to determine child's father.
Could you give more context?
