Band is related to Music. Music is related to Piano. Piano can be used for Teaching. 
Busy is a synonym of Occupy. Occupy is a synonym of Absorb. Absorb is a type of Blend. 
Band <--RelatedTo--> Music <--RelatedTo--> Piano --UsedFor--> Teaching 
Busy <--Synonym--> Occupy <--Synonym--> Absorb --IsA--> Blend 