periodic
periodical
amphibian
angiosperm
anniversary
annual
annual holiday
aquatic plant
biannual
bicentenary
bicentennial
biennial
bimonthly
birthday
bissextile day
biweekly
catamenial
centenary
centennial
commemoration
cosmopolite
cutting
daily
decennial
deciduous plant
diamond jubilee
dicot
dicotyledon
diurnal
ephemeral
evergreen
exotic
flowering plant
fortnightly
fungus
gametophyte
golden wedding anniversary
gymnosperm
hebdomadal
holy days
hourly
hydrophyte
immovable feast
jubilee
leap year
menstrual
momentary
momently
monocot
monocotyl
monthly
name day
day of remembrance
triannual
triennium
15-volt
NJ
archidiaconal
day-and-night
domiciliary
one-candidate
pollcode.com
prison-related
semiannual
septennial
shareholders'
millennial
perennial
quadrennial