As of right now, we have both the typology and comparative-linguistics tags. Currently typology lacks usage recommendations, which I think we see reflected in the questions that have been tagged with it. The comparative-linguistics tag does have usage recommendations, which describe the tag as being for "questions about the similarities and/or differences between two conlangs or a conlang and a natlang." However, what this describes is usually considered a subset of linguistic typology, which is concerned with classifying languages based on their features and with describing common structural and featural properties of language and their distribution throughout the world's languages.
Based on this, is it necessary to have both of these tags?