This is the 2319th most frequent French word.
notion
Idea or concept.
The word 'notion' is used here to express a basic understanding or grasp of a subject.
Il a une bonne notion des principes de la physique.
He has a good understanding of the principles of physics.
In this sentence, 'notion' conveys a specific idea or conception, which may be accurate or mistaken.
Elle a une notion erronée de ce qui constitue une alimentation saine.
She has a mistaken notion of what constitutes a healthy diet.
Here, 'notion' refers to introducing a thematic idea or concept into consideration.