Diagnose is a synonym of Name. Lab is a type of Name. 
Volunteer is a type of Act. Volunteer is related to Relief. Relief is a type of Emotion. Excitement is a type of Emotion. 
Diagnose <--Synonym--> Name <--IsA-- Lab 
Act <--IsA-- Volunteer <--RelatedTo--> Relief --IsA--> Emotion <--IsA-- Excitement 