Synonyms: find, discover, come across, encounter
find: to see where something hidden or lost is after looking for it
Example: I found a £2 coin behind the sofa. Did she find the book she was looking
discover: to find something new or to learn something for the first time
Example: Which scientist discovered penicillin? We discovered that house had already been sold.
come across: (informal) to find something by chance
Example: I came across this old photo when I was clearing out a drawer.
encounter: (formal) to meet someone or something unexpectedly
Example: On the journey we encountered several amusing people. I have never encountered such hospitality anywhere else.
lose: to put or drop something somewhere and not to know where it is