Idea
Notion
noun, の adjective, verbal noun
You have a thought on a particular view. This is your idea or notion on it.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
南国の人達には時間の観念が無いという固定観念を持っている人は多い。
Many people buy into the stereotype that people in the tropics have no concept of time.
もうそろそろ観念して、自分がお金の観念に欠けているってことを認めろよ。
It’s time you stop and admit that you have no sense of money.
彼女は芸術においては素晴らしい美の観念を持っているのに、どうしてあんなに不細工な男性と付き合っているのかが理解できない。
She has a keen sense of beauty for art, so I don’t understand how she’s dating such an ugly guy.