notion
US /ˈnoʊ.ʃən/
UK /ˈnoʊ.ʃən/

1.
a conception of or belief about something
:
•
He had a strange notion that the world was flat.
•
The new policy is based on the notion of equality.
2.
a small article, especially one used in sewing or knitting
:
•
She went to the craft store to buy some sewing notions.
•
The haberdashery section sells various small notions.