KNOW and MEET

Read this and listen to the explanation.

KNOW = Be familiar with

I don't know my neighbours.
Do you know them?
Do you two know each other?

Compare:
She knew a lot of people in Scotland (=conocía a mucha gente)
She met a lot of people in Scotland (=conoció a mucha gente)

MEET
-First time:           Pleased to meet you.      I'd like to meet your wife.

-By chance:         Did you meet anyone in town?      Guess who I met yesterday.

-By arrangement:      Let's meet at ten.      Shall we meet at the cinema?
                                         We're meeting them outside the theatre at seven.
                                         The Prime Minister met other European leaders for talks.