Noun month has 2 senses
  1. calendar month, month - one of the twelve divisions of the calendar year; "he paid the bill last month"
    --1 is a kind of time period, period of time, period
    --1 has parts: week, calendar week
    --1 has particulars:
     date; Revolutionary calendar month; Gregorian calendar month; Jewish calendar month; Islamic calendar month; Hindu calendar month
  2. month - a time unit of 30 days; "he was given a month to pay the bill"
    --2 is a kind of
    time unit, unit of time
    --2 is a part of year
    --2 has parts:
     new moon, new phase of the moon; half-moon; full moon, full-of-the-moon, full phase of the moon
    --2 has particulars:
     lunar month, moon, lunation, synodic month; anomalistic month; sidereal month; solar month
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