partition
room divider
compasses
drafting instrument
systematist
taxonomer
taxonomist
amplifier
attenuator
comparator
discriminator
limiter
modulator
synthesizer
thick-film
Rider
Ryder
Schneider
cider
collider
decider
glider
guider
hider
hyder
insider
outsider
provider
rider
sider
slider
snider
spider
strider
supercollider
wider