Other names for an entrance gate are:
access gate
entry gate
Not a homophone, but a possible hononym, in that entrance can also mean to put into a trance or to enter a trance.
No it does not have gates. I would add that there ARE gates but only at the entrance to the sidewalks.
light gates are used to brighten up the entrance when it is dark.
A porch.
Service entrance stack.
The Underworld. Another answer may be AVERNO
His last name is Gates, because Gates is his family's name. His last name Gates comes from his ancestors.
Bill Gates' last name is Gates
Bill Gates' full name is William Henry Gates III
Gates McFadden's birth name is McFadden, Cheryl Gates.
Andy Gates's birth name is Andrew Gates Freeman.
Antonio Gates's birth name is Antonio D. Gates.