Suggest is a synonym of Recommend. Recommend is a synonym of Move. Move is a synonym of Proceed. Head is a type of Proceed. 
Peace is related to Sign. Sign is related to Symbol. 
Suggest <--Synonym--> Recommend <--Synonym--> Move <--Synonym--> Proceed <--IsA-- Head 
Peace <--RelatedTo--> Sign <--RelatedTo--> Symbol 