wc /etc/passwd

I have left unix for a long time.Almost forget everthing.:frowning:
Anybody can tell me what is the meaning?

 wc /etc/passwd
  9   16 1155 /etc/passwd

and

$ wc -l /etc/passwd
wc -l /etc/passwd
9 /etc/passwd

wc counts the number of characters, words and lines.

The example is trying to see how many entries in /etc/passwd