Do you know the most common French words? Here are numbers 51 to 60.

51) parce que because
conjunction

52) avec with
preposition

53) lui him/her
personal pronoun

54) son, sa, ses his/her/its
possessive adjectives

55) enfin then, finally
adverb

56) falloir to be necessary
all about falloir

57) par by
preposition

58) quand when
interrogative adverb,conjunction*

59) vouloir to want
all about vouloir

60) petit small, short
synonyms for petit