(ordered by popularity)
important
major
essential
second
key
third
vertical
horizontal
critical
single
main
significant
strong
principal
central
integral
normal
necessary
genetic
active
vital
fundamental
basic
largest
crucial
structural
minor
tangential
additional
radial
cognitive
emotional
fourth
affective
dominant
slow
random
semantic
volatile
reactive
substantial
longitudinal
pure
psychological
prominent
axial
organic
electronic
corresponding
variable
functional
dynamic
visual
elastic
syntactic
linear
phonological
cellular
magnetic
spatial
connected
inflammatory
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