How are the areas of study - evolution and classification - interlinked?

The field of evolution and classification are interlinked in the following manner:

(i) The more characteristics two species have in common, the more closely they are related. Classification of species is a reflection of their evolutionary relationship.

(ii) The more number of characteristics shared by two organisms more is the probability of them having common ancestor. Thus, classification of an organism is the reflection of its evolutionary path.