Idea is related to Invention. Invention is related to Mother. Mother is related to Husband. 
Lack is a different concept from Full. Full is similar to Instinct. Instinct is a synonym of Impulse. 
Idea <--RelatedTo--> Invention <--RelatedTo--> Mother <--RelatedTo--> Husband 
Lack <--DistinctFrom--> Full <--SimilarTo--> Instinct <--Synonym--> Impulse 