She did not notice how popular she was.
She did not pay attention to how popular she was.
Same thing
Thank you very much
Yes.
One thing you can use to find out about different words with the same or similar meanings is to use https://www.thesaurus.com
Example: https://www.thesaurus.com/browse/notice?s=t
Actually, there is a slight difference in meaning between the two sentences.
"She did not notice how popular she was" suggests that the person in question was not aware or did not intentionally observe how popular she was. This implies that she may have been popular, but simply did not realize it.
On the other hand, "She did not pay attention to how popular she was" implies a deliberate act of not paying attention to her popularity. This suggests that she was aware of her popularity but chose not to focus or care about it.
So, while the two sentences convey a similar idea of her not being aware of her popularity, the second sentence implies a more conscious decision to ignore it.