(product development) project

project (planned endeavour)

being physically close together / being closely related

deep, close (relationship)

to be related

relation

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

to research, to study