The difference between Tomorrow and Yesterday
When used as nouns, tomorrow means the day after the present day, whereas yesterday means the day immediately before today.
When used as adverbs, tomorrow means on the day after the present day, whereas yesterday means on the day before today.
check bellow for the other definitions of Tomorrow and Yesterday
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Tomorrow as an adverb:
On the day after the present day.
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Tomorrow as an adverb:
At some point in the future; later on
Examples:
"If you don't get your life on track today, you're going to be very sorry tomorrow."
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Tomorrow as a noun:
The day after the present day.
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Yesterday as a noun:
The day immediately before today; one day ago.
Examples:
"Today is the child of yesterday and the parent of tomorrow."
"'Yesterday was rainy, but by this morning it had begun to snow."
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Yesterday as a noun:
The (recent) past, often disparaging.
Examples:
"'yesterday's technology"
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Yesterday as an adverb:
On the day before today
Examples:
"I started to watch the video yesterday, but could only finish it this evening."
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Yesterday as an adverb:
As soon as possible
Examples:
"I want this done yesterday!"