they come from greek roots
example, gravitropsim
gravi is gravity
tropos means 'turning'
so means turning to gravtity
phototroposism
photos=light
tropos='turning'
so it means turning toward the light
photosynthysis
photos=light
synthysis=tuning into or transforming into a useable form
so it means turning light into a usable form
In subjunctive mood, a verb would be doubtful or un-factual.
Technical language from the workplace or specialized fields of knowledge is called jargon.