I need your help in pronounciation of the both words as they have different meaning
You would need to know the context of its use in the sentence.
Principal (adjective or noun) conveys the meaning of "primary" or "chief" - like [as adjective] the principal aim of a series of tasks,or [as noun] the principal of a school. It is also used as the chief part of a loan (i.e., not the interest), as in apply the extra $50 in this month's mortgage payment toward the principal.
Principle (noun [only!]) is a rule, law or general truth. The principles of mathematics
These words are sources of confusion for even well-versed minds. Some phrases that can help you remember the difference are:
Some writers focus on the distinction that principles can be used in the plural, but principal usually only in the singular form. This strategy, when used as a quick rule, often leads to errors. The plural "principals" is appropriate when writing about several individuals who each have a primary role, whose position of primacy does not conflict with another's similar position.
- The principal alphabetic principle places A before E.
- The school princiPAL is my PAL.
"The theater company honored the principals." (i.e., their lead actors)
"The school principals gathered for a meeting, but the superintendent did not come."