1) The word "flower" contains two vowels: O and E.

2) The word "telephone" contains five vowels: E, E, O, E, and E.

3) The highest-grossing film of all time is "Avengers: Endgame," which has earned over $2.79 billion at the global box office.

4) The concept of reinsurance, which is insurance for insurance companies, originated in the 17th century.