Protection is related to Skin. Skin is related to Rub. Rub is related to Gentle. Gentle is related to Mild. 
Constant is the opposite of Variable. Variable is part of Formula. Formula is a synonym of Recipe. Recipe is a type of Direction. 
Protection <--RelatedTo--> Skin <--RelatedTo--> Rub <--RelatedTo--> Gentle <--RelatedTo--> Mild 
Constant <--Antonym--> Variable --PartOf--> Formula <--Synonym--> Recipe --IsA--> Direction 