Sick is related to Disease. Disease is related to General. General is related to Chief. 
Bother is a synonym of Disturb. Disturb is a synonym of Distract. Distract is a synonym of Confuse. 
Sick <--RelatedTo--> Disease <--RelatedTo--> General <--RelatedTo--> Chief 
Bother <--Synonym--> Disturb <--Synonym--> Distract <--Synonym--> Confuse 