* Hate: Hatred
* Hot: Heat
* Silent: Silence
* In front: This is a prepositional phrase, not a noun.
* See: Sight
* Crown: Royalty (though "crown" can be used as an abstract noun for the concept of power or leadership)
* Try: Attempt
* Approve: Approval
* Relieve: Relief
* Obey: Obedience
Let me know if you'd like help understanding abstract nouns further!