Excitement vs. Adrenaline: What's the Difference?

Excitement and Adrenaline Definitions
Excitement
The act or an instance of exciting.
Adrenaline
See epinephrine.
Excitement
The condition of being excited.
Adrenaline
(hormone) epinephrine, the hormone and neurotransmitter.
Excitement
Something that excites
The dancing tigers and other circus excitements.
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Adrenaline
Excitement; thrills.
Excitement
(uncountable) the state of being excited (emotionally aroused).
Get caught up in the excitement
Adrenaline
A hormone secreted by the adrenal medulla that acts as a powerful stimulant in reponse to fear or stress; it stimulates autonomic nerve action. It can be obtained as a crystalline substance, C9H13NO3. It is used in medicine as a vasoconstrictor (hemostatic) and cardiac stimulant, also to reduce allergic reactions and to stimulate the heart in cases of cardiac arrest.
Excitement
(countable) something that excites.
Adrenaline
A catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action
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Excitement
The act of exciting, or the state of being roused into action, or of having increased action; impulsion; agitation; as, an excitement of the people.
Excitement
That which excites or rouses; that which moves, stirs, or induces action; a motive.
The cares and excitements of a season of transition and struggle.
Excitement
A state of aroused or increased vital activity in an organism, or any of its organs or tissues.
Excitement
The feeling of lively and cheerful joy;
He could hardly conceal his excitement when she agreed
Excitement
The state of being emotionally aroused and worked up;
His face was flushed with excitement and his hands trembled
He tried to calm those who were in a state of extreme inflammation
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Excitement
Something that agitates and arouses;
He looked forward to the excitements of the day
Excitement
Disturbance usually in protest