In the following question, there is a certain relation between two given words on one side of $::$ and one word is given on another side of $::$ while another word is to be found from the given alternatives, having the same relation with this word as the words of the given pair bear. Choose the best alternative.
Virology : Virus $: :$ Semantics : ?
Virology $\rightarrow$ deals with the effects of the virus.
Similarly, semantics $\rightarrow$ deals with the effects of language.