Obligation is related to Demand. Demand is related to Come. Come is related to Move. Move is a synonym of Suggest. 
Involvement is a type of Connection. Involvement is related to Affair. Affair is related to Partner. Partner is related to Stick. 
Obligation <--RelatedTo--> Demand <--RelatedTo--> Come <--RelatedTo--> Move <--Synonym--> Suggest 
Connection <--IsA-- Involvement <--RelatedTo--> Affair <--RelatedTo--> Partner <--RelatedTo--> Stick 