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Notice vs Realize: What's the Difference?

B1 Verbs

What's the Difference?

While "notice" means to physically perceive or observe something, "realize" refers to mentally becoming aware of a fact.

Memory Tip: notice = see, realize = understand

notice starts with 'no', realize starts with 're'

notice /ˈnoʊtɪs/

verb
To see or become aware of something.
Example:
I was walking through the park when I noticed a beautiful bird sitting on a branch.
Common patterns:
notice something notice someone
notice →

realize /ˈriːəlaɪz/

verb
To understand or become aware of something clearly.
Example:
I have realized that learning a new language takes time and patience.
Common patterns:
realize a dream realize the importance realize the potential
realize →

Common Mistakes

I didn't realize the sign on the door as I walked by.
I didn't notice the sign on the door as I walked by.
The sentence refers to physically seeing the sign, so 'notice' is correct.
She noticed that she had forgotten her keys when she reached the car.
She realized that she had forgotten her keys when she reached the car.
The sentence refers to mentally becoming aware of forgetting the keys, so 'realize' is correct.

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