Float is related to Pool. Pill is etymologically related to Pool. 
Beginning is a different concept from Start. Start is related to Move. Move is a synonym of Motion. Approach is a type of Motion. 
Float <--RelatedTo--> Pool <--EtymologicallyRelatedTo-- Pill 
Beginning <--DistinctFrom--> Start <--RelatedTo--> Move <--Synonym--> Motion <--IsA-- Approach 