Outdoor is a synonym of Outside. Outside is related to Winter. 
Condition is related to Hair. Hair is related to Interest. Interest is related to Incentive. Incentive is a synonym of Bonus. 
Outdoor <--Synonym--> Outside <--RelatedTo--> Winter 
Condition <--RelatedTo--> Hair <--RelatedTo--> Interest <--RelatedTo--> Incentive <--Synonym--> Bonus 