precede, proceed:
to precede = to come before; Her part in the play preceded the music.
to proceed = to go forward; They proceeded with the play even though it was late.
principal, principle:
principal = head of a school; The principal spoke to the students yesterday.
principle = a basic truth; He suggested that fairness be a principle of all behavior.
raise, rise:
to raise = to move upward; He raised the flag at sunrise.
to rise = to go up; You will need to rise early to see the sunrise.
respectfully, respectively:
respectfully = showing respect; The children respectfully helped their parents.
respectively = each in the order given; Their father and mother died respectively.
set, sit:
to set = to put or place; They set the plates on the table.
to sit = to be seated; They will sit at the table when they eat.
sometime, some time, sometimes:
sometime = at an unstated time; I will be here sometime before noon.
some time = a period of time; It was some time before she finally arrived.
sometimes = now and then; They sometimes arrive early.
there, their, they’re:
there = place; Why don’t you set the books there on the table?
their = ownership; They will want to get their books from off the table.
they’re = they are; They’re supposed to have their own books.
weather, whether:
weather = climate; I think the weather will be nice tomorrow.
whether = choice; Decide tomorrow whether or not you want to come.
your, you’re:
your = ownership; I think this is your coat.
you’re = you are; You’re not leaving your coat there, are you?