|Phases of the moon = various shapes of the moon.
New moon = the time when we do not see the moon at all.
Synodic period = duration of moon cycle from new moon to full
moon and back to new moon. Last about 30 days.
Waxing = when the moon appears to be growing or getting bigger.
When we see more of the moon each day. From new moon to full moon.
Waning = when the moon appears to be shrinking or getting smaller.
When we see less of the moon each day. From full moon to new moon.
First quarter moon = waxing quarter moon
Third quarter moon = waning quarter moon
Gibbous moon = more than quarter but less than full
Crescent moon = less than quarter