Welcome is a type of Receive. Welcome is a type of Acceptance. Acceptance is the opposite of Denial. 
Plan is related to Set. Receiver is a type of Set. Receiver is the opposite of Donor. 
Receive <--IsA-- Welcome --IsA--> Acceptance <--Antonym--> Denial 
Plan <--RelatedTo--> Set <--IsA-- Receiver <--Antonym--> Donor 