a road or path, (often) a highway / a course, an itinerary of stops, as for a bus / a path or course for information / a path or course for goods in a transaction / (video games, storytelling) storyline

(mathematics) a root (as in a square root) / (linguistics) an etymological root / (music) root note in a chord

ordinary; conventional; normal

generally, usually, commonly

the usual (thing, etc.), the norm

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

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

back channel

school (institution dedicated to teaching and learning)