Squad is a synonym of Company. Company is related to Employment. Employment is related to Apply. Apply is the opposite of Quit. 
Apology is derived from Apologize. Apology is related to Regret. Regret is related to One. 
Squad <--Synonym--> Company <--RelatedTo--> Employment <--RelatedTo--> Apply <--Antonym--> Quit 
Apologize <--DerivedFrom-- Apology <--RelatedTo--> Regret <--RelatedTo--> One 