Meaning : A small lump or protuberance.
Synonyms : nubble
Meaning : A small piece.
A nub of coal.
A stub of a pencil.
Synonyms : stub
Meaning : The choicest or most essential or most vital part of some idea or experience.
The gist of the prosecutor's argument.
The heart and soul of the Republican Party.
The nub of the story.