link
join, meet
A word meaning "to come together" is join.
meet
come, adit
stop
Raft?
Meet Join
Seam.
The four-letter word that can go before "step," "bell," and "amp" is "hand." Together, they form "handstep," "handbell," and "handamp."
A four letter word starting with the letter a is able.
A four letter word for 'in addition to' is also.
That Four-Letter Word was created in 2006.