"trainer" - key terms from Wikipedia

advanced trainer
animal trainer
assistant trainer
celestial navigation trainer
gemini trainer
gnat trainer
guest trainer
head trainer
horse trainer
jet trainer
link trainer
navigation trainer
novice trainer
personal trainer
pigeon trainer
primary trainer
s personal trainer series
s trainer
seward trainer
tejas trainer
todd trainer
trainer
trainer aircraft
trainer and light
trainer for the us navy
trainer instructor
trainer modification
trainer points
trainer variant
trainer version
trainer versions
trainer versions of the above