The difference between Heart and Nerve
When used as nouns, heart means a muscular organ that pumps blood through the body, traditionally thought to be the seat of emotion, whereas nerve means a bundle of neurons with their connective tissue sheaths, blood vessels and lymphatics.
When used as verbs, heart means to be fond of, whereas nerve means to give courage.
check bellow for the other definitions of Heart and Nerve
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Heart as a noun (anatomy):
A muscular organ that pumps blood through the body, traditionally thought to be the seat of emotion.
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Heart as a noun (uncountable):
Emotions, kindness, moral effort, or spirit in general.
Examples:
"The team lost, but they showed a lot of heart."
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Heart as a noun:
The seat of the affections or sensibilities, collectively or separately, as love, hate, joy, grief, courage, etc.; rarely, the seat of the understanding or will; usually in a good sense; personality.
Examples:
"a good, tender, loving, bad, hard, or selfish heart"
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Heart as a noun:
Courage; courageous purpose; spirit.
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Heart as a noun:
Vigorous and efficient activity; power of fertile production; condition of the soil, whether good or bad.
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Heart as a noun (archaic):
Examples:
"Listen, dear heart, we must go now."
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Heart as a noun:
Personality, disposition.
Examples:
"a cold heart'"
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Heart as a noun (figurative):
A wight or being.
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Heart as a noun:
A conventional shape or symbol used to represent the heart, love, or emotion: ♥ or sometimes .
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Heart as a noun:
A playing card of the suit hearts featuring one or more heart-shaped symbols.
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Heart as a noun (cartomancy):
The twenty-fourth Lenormand card.
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Heart as a noun:
The centre, essence, or core.
Examples:
"The wood at the heart of a tree is the oldest."
"Buddhists believe that suffering is right at the heart of all life."
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Heart as a verb (transitive, humorous, informal, mostly, internet slang):
To be fond of.
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Heart as a verb (transitive, obsolete):
To give heart to; to hearten; to encourage; to be devoted.
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Heart as a verb (transitive, masonry):
To fill an interior with rubble, as a wall or a breakwater.
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Heart as a verb (intransitive, agriculture, botany):
To form a dense cluster of leaves, a heart, especially of lettuce or cabbage.
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Nerve as a noun:
A bundle of neurons with their connective tissue sheaths, blood vessels and lymphatics.
Examples:
"The nerves can be seen through the skin."
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Nerve as a noun (nonstandard, colloquial):
A neuron.
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Nerve as a noun (botany):
A vein in a leaf; a grain in wood
Examples:
"Some plants have ornamental value because of their contrasting nerves."
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Nerve as a noun:
Courage, boldness.
Examples:
"He hasn't the nerve to tell her he likes her. What a wimp!"
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Nerve as a noun:
Patience.
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Nerve as a noun:
Stamina, endurance, fortitude.
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Nerve as a noun:
Audacity, gall.
Examples:
"He had the nerve to enter my house uninvited."
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Nerve as a noun (polymer technology):
The elastic resistance of raw rubber or other polymers to permanent deformation during processing.
Examples:
"A ''nervy'' tank lining will be difficult to lay around tight bends or in corners because it tends to spring back."
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Nerve as a noun (in the plural):
Agitation caused by fear, stress or other negative emotion.
Examples:
"Ellie had a bad case of nerves before the big test."
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Nerve as a noun (obsolete):
Sinew, tendon.
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Nerve as a verb (transitive):
To give courage.
Examples:
"May their example nerve us to face the enemy."
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Nerve as a verb (transitive):
To give strength.
Examples:
"The liquor nerved up several of the men after their icy march."