Like prime numbers, prime words are words that can't be 'divided' by other words... they have no broader, simpler term from which they arose. Cavemen used a lot of them, maybe. So, strictly speaking, the prime words on this page are only the ones that aren't indented.
The list below is from a list of 100 basic words for children, if I recall correctly, and it was structured in an earlier version of Lexonomy that I made with a drag-and-drop Flash interface. That interface is no longer used.
a
the
this
these
that
those
number
first
last
less
many
some
all
each
more
one
two
which
other
about
after
day
when
then
now
and
with
too
answer
as
at
bad
dumb
mean
evil
big
large
huge
humongous
but
by
can
could
would
should
Copy Wow, the first link from Prime Words (Feb 8, 2011)
do
ask
give
provide
did
how
instructions
recipe
formula
process
import
make
made
gather
use
fly
click
talk
say
call
said
come
choose
select
specify
go
enter
look
find
write
feel
for
from
good
halo
nimbus
smart
special
unique
happen
damage
have
get
had
has
I
we
they
them
he
him
his
if
is
are
been
were
was
be
like
love
long
may
must
my
their
no
not
of
off
oil
or
part
place
below
there
over
was
find
in
into
restaurant
house
same
similar
like
see
look
so
than
their
then
thing
animal
cat
dog
frog
snake
button
it
what
notes
leaf
tree
computer
pencil
book
word
name
alias
reference
psuedonym
water
stream
river
creek
speaker
picture
diagram
flowchart
schematic
figure
image
type
way
weather
storm
tornado
hurricane
typhoon
precipitation
snow
blizzard
rain
drizzle
sleet
which
you
your
people