Profound is a synonym of Fundamental. Fundamental is a type of Factor. Factor is related to Math. Math is related to Equal. 
Technique is a type of Method. Method is related to Talk. Talk is related to Cheap. Cheap is related to Trailer. 
Profound <--Synonym--> Fundamental --IsA--> Factor <--RelatedTo--> Math <--RelatedTo--> Equal 
Technique --IsA--> Method <--RelatedTo--> Talk <--RelatedTo--> Cheap <--RelatedTo--> Trailer 