These are the most frequently used words in another edition of this book.
2000
age
always
apocalypse
apocalyptic
argument
between
birth
book
calculation
calendar
calendrical
cannot
century
christ
christian
come
common
complex
culture
current
cycle
date
days
debate
different
does
earth
end
even
exactly
extra
first
four
future
general
god
good
great
gregorian
history
human
hundred
issue
jesus
julian
know
last
leap
life
little
long
man
may
might
millennial
millennium
months
must
natural
nature
need
new
next
now
number
old
once
order
own
part
people
question
reason
rule
savants
second
shall
since
six
skills
solar
still
system
theory
therefore
thousand
thus
time
two
upon
use
ussher
week
white
work
world
years
yet
zero