The difference between Last night and Tomorrow
When used as nouns, last night means the evening or night immediately before the present, whereas tomorrow means the day after the present day.
When used as adverbs, last night means during the previous day's nighttime. during the night before today, whereas tomorrow means on the day after the present day.
check bellow for the other definitions of Last night and Tomorrow
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Last night as a noun (often, used adverbially):
The evening or night immediately before the present.
Examples:
"He said he didn't get any sleep last night and I know he hadn't gotten much the previous night."
"Last night was wonderful. Can I see you again?"
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Last night as an adverb:
During the previous day's nighttime. During the night before today.
Examples:
"“We partied last night.”"
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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.