"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