Existence is related to Being. Being is related to Famous. Famous is related to Very. Very is related to Desert. 
Communication is a synonym of Discourse. Discourse is a synonym of Discuss. 
Existence <--RelatedTo--> Being <--RelatedTo--> Famous <--RelatedTo--> Very <--RelatedTo--> Desert 
Communication <--Synonym--> Discourse <--Synonym--> Discuss 