Keep is a synonym of Sustain. Sustain is a type of Admit. Admit is a synonym of Accept. Accept is a synonym of Consent. 
Personality is related to Human. Human is related to Group. Crop is etymologically related to Group. Crop is related to Agriculture. 
Keep <--Synonym--> Sustain --IsA--> Admit <--Synonym--> Accept <--Synonym--> Consent 
Personality <--RelatedTo--> Human <--RelatedTo--> Group <--EtymologicallyRelatedTo-- Crop <--RelatedTo--> Agriculture 