Answer:
Antonym
Step-by-step explanation:
Antonyms are words that have opposite meanings, e.g. good and bad.
To dissolve something means to turn it into a liquid or solution, and to solidify something means to make it become solid.
Noise is the presence of sound, while silence is its absence.
We can see that these two pairs consist of words that have opposite meanings, which makes them antonyms.