keepsake, memento
"Souvenir" is a French word meaning "memory." By extension, it means an object that brings back a specific memory. English borrowed that word with the same meaning.
The root word of "souvenir" is the French word "souvenir," which means "to remember."
The word souvenir is pronounced \ˈsü-və-ˌnir and it has a total of three syllables.
A word that has the same meaning as another word is a synonym.
I picked up this souvenir in a foreign country.
The word in the passage with the same meaning as instantly is "immediately."
I'm pretty sure there's no direct translate for the word keepsake in French. The closest French word for keepsake, an object kept for the sake of the giver, would be souvenir.
After the lantern festival, my friend brought back a homemade lantern as a souvenir.
Some words that contain the root word "onym" are synonym (meaning a word with a similar meaning), antonym (meaning a word with the opposite meaning), and homonym (meaning a word that sounds the same but has a different meaning).
Memento or keepsake.
The word that has the same meaning as "opened by force" is "pry."
The word "souvenir" applies to a keepsake or an article from a different locale.