The difference between Food and Sustenance
When used as nouns, food means any solid substance that can be consumed by living organisms, especially by eating, in order to sustain life, whereas sustenance means something that provides support or nourishment.
check bellow for the other definitions of Food and Sustenance
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Food as a noun (uncountable):
Any solid substance that can be consumed by living organisms, especially by eating, in order to sustain life.
Examples:
"synonyms: Thesaurus:food"
"The innkeeper brought them food and drink."
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Food as a noun (countable):
A foodstuff.
Examples:
"synonyms: belly-timber q1=archaic, now only humorous or regionafoodstuff provender Thesaurus:food"
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Food as a noun (uncountable, figuratively):
Anything that nourishes or sustains.
Examples:
"hypo brainfood"
"The man's inspiring speech gave us food for thought."
"Mozart and Bach are food for my soul."
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Sustenance as a noun:
Something that provides support or nourishment.