Description is related to Easy. Easy is related to Difficult. Difficult is related to Tough. 
Texture is related to Touch. Touch is related to Kill. Fire can Kill. Fire can Harm. 
Description <--RelatedTo--> Easy <--RelatedTo--> Difficult <--RelatedTo--> Tough 
Texture <--RelatedTo--> Touch <--RelatedTo--> Kill <--CapableOf-- Fire --CapableOf--> Harm 