Life can be Important. Important is a synonym of Critical. Critical is related to Crisis. 
Professor is a different concept from Undergraduate. Undergraduate is related to Year. Year is related to Orbit. 
Life --HasProperty--> Important <--Synonym--> Critical <--RelatedTo--> Crisis 
Professor <--DistinctFrom--> Undergraduate <--RelatedTo--> Year <--RelatedTo--> Orbit 