I always have problems when to use:

Imporance and important.
Difference and different.

Can anyone please tell me the differences between two and give me an example with sentences.
importance and difference are nouns.
important and different are adjectives.
"she is an important person in our group"
"one should know the importance of learning English"
"tom and *** have differences in their opinions"
"tom had a different idea"

hope it helps!
Thank you
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Give me a sentence with importance word in it.thx