Peradventure -as an adverb
( not comparable, archaic) perchance or maybe ; perhaps; supposing.
Example in Sentences
Bible, Genesis 18:24- Peradventure there be fifty righteous within the city.
So, if peradventure your academic session is 8 months, you are assumed to cover one year after the completion of this period.

Peradventure - as a noun
( plural peradventures) chance , doubt or uncertainty
Example
William R. Thayer, Woman Suffrage, Pro and Con (in The Atlantic Monthly , volume 65, page 310)- By his death Bruno did not prove that his convictions are true, but he proved beyond peradventure that he was a true man; and by such from the beginning has human nature been raised towards that ideal nature which we call divine.


Perhaps
The words maybe and perhaps mean the same.

In British English, they are both common.
Maybe is preferred in an informal style while perhaps is slightly more formal. Both perhaps and maybecan go at the beginning of a sentence.
e.g.
a. Maybe she will come. OR Perhaps she will come.
b. Maybe she didn’t recognize you. OR Perhaps she didn’t recognize you.
c. King Lear is perhaps the greatest of Shakespeare’s plays.

In American English, perhaps is not very common. In fact, it is considered as rather formal.

Perhaps is an adverb.
It can be used to modify an entire sentence.
• Perhaps you are right.
• Perhaps we have met before.

Perhaps can also be used as an ordinary verb.
In this case, it goes before a number.
•He was perhaps 80.

Perhaps is used to suggest that he was not certain about something.
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