The rules that use the vocabulary item "speed" are:

<speed_mod>

speed <speed>

speed is <speed>

<displayable_thing>

speed

<catch_up_speed_mod>

catch up speed <speed>

catch up speed is <speed>

<firing_rate_descriptor>

firing speed

<speed_command>

speed up

speed up by <speed>

speed up to <speed>

<speed_descriptor>

speed