Trend is a synonym of Drift. Drift is etymologically related to Drive. Drive is related to Auto. Automatic is derived from Auto. 
Influence is a synonym of Charm. Charm is a synonym of Attraction. 
Trend <--Synonym--> Drift --EtymologicallyRelatedTo--> Drive <--RelatedTo--> Auto <--DerivedFrom-- Automatic 
Influence <--Synonym--> Charm <--Synonym--> Attraction 