Something you keep from a place you visited to remember that place.
le jour du souvenir is translated Remembrance Day in English.
So that I can remember
It's something that reminds you of a person place or thing etc.
the day of remembrance - an anniversary of something
'With my best recollection / memories'
Our Souvenir was created in 2002.
A souvenir shop is in any country in Africa for example in chad and in morocco there are souvenir shops.
A souvenir is a thing, making it a noun. (As a noun adjunct, it can act like an adjective in compound nouns such as 'souvenir hunters' or 'souvenir shop')
If you mean like a momento that you bring back from a holiday or something then it's souvenir.
Souvenir of Canada was created in 2002.
Souvenir - band - was created in 1999.
Souvenir from Japan was created in 1977.