What's the difference between a "dependant" and "dependent child"?
A "dependent
child" refers to your or your spouse's natural or adopted child, or other
wholly dependent individual. However, the term "dependant" can include a much broader
group of people.
Even if he or she depends upon you for support, you should not enter
your spouse as a dependant. For tax purposes, a dependant
is someone who is wholly reliant on you for support and is not your
spouse or common-law partner.