Prefixes:
* at-: meaning "to," "toward," or "against"
* attract: to draw towards
* contradict: to speak against
* de-: meaning "away from" or "opposite"
* detract: to take away from
* distract: to draw attention away
* ex-: meaning "out" or "from"
* extract: to pull out
* re-: meaning "again" or "back"
* retract: to take back
* sub-: meaning "under" or "below"
* subtract: to take away from
Suffixes:
* -able: meaning "capable of"
* tractable: easily managed
* contractable: able to be contracted
* -ion: meaning "action" or "process"
* contraction: a shortening
* -ive: meaning "relating to" or "tending to"
* attractive: appealing
* contractive: tending to contract
* -or: meaning "one who does"
* tractor: a vehicle that pulls
* -ory: meaning "relating to"
* tractory: relating to a tract
* -ate: meaning "make" or "cause"
* tractate: to treat systematically
Other combinations:
* tractate: a treatise or systematic exposition
* tractrix: a curve traced by a point on a taut string as it is unwound from a fixed point
This is not an exhaustive list, but it gives you a good starting point for exploring the various ways "tract" can be combined with prefixes and suffixes to create new words.