Assume is a synonym of Absorb. Involve is a type of Absorb. Involve is a synonym of Overwhelm. Overwhelming is derived from Overwhelm. 
Pad is related to Note. Note is related to Written. 
Assume <--Synonym--> Absorb <--IsA-- Involve <--Synonym--> Overwhelm <--DerivedFrom-- Overwhelming 
Pad <--RelatedTo--> Note <--RelatedTo--> Written 