Beside and besides
Beside is a preposition. It means at the side of, close to.
- She sat beside her mother.
Beside can also mean compared with.
- You are quite tall beside your sister.
- Besides physics, we have to study chemistry and mathematics.
Besides can also be used as a discourse marker meaning also, as well. In this case it goes at the beginning of a clause.
- It is too late to go out now. Besides, it is starting to rain.
Back and Again
Bath and bathe
Beat and win
Because of, due to, owing to and on account of
Before and in front of
Begin and Start
Belong to, belong on and belong in
Below and under
Between and among
Between and during
Between and from
Big, large and great
Born and borne
Bring and take
But, though, in spite of, despite
By and with