to heal: cure, recover

bound of: An object of class Boundary represents either an upper or a lower bound of an interval over the set of extended rational numbers.

in case you have misspelled “heal,” here is:

to heel: close behind, under discipline or control

To heal is to cure, to get better (as in the quote: “Physician, heal thyself.”).

I haven’t heard of “bound of”. Bound TO means attached (bound being the past tense of the verb “bind”. Example: They were bound to each other for life by the vows they just took.). It can also mean liable or likely to (as in: If he passes his driving test, he is bound to ask his parents for use of the family car).

Hope this helps!