Incorrect spelling

aswell

Incorrect spelling, explanation: this is an incorrect spelling due to a~THE fact, that as well is a phrase created from two words. As and well separately can be used in many different contexts but together they make a phrase with a specific meaning. Therefore it should be written down as well, not aswell.


Correct spelling

as well

Correct spelling, explanation: as well is a two-word phrase, which means it contains two separate words; in this case a preposition and an adverb; which combined together give us special meaning. This phrase is always written separately, that’s why aswell is a misspelling.

Definition of as well:
phrase, in addition; in the same manner as something else.
I’m going to apply to Harvard and to Yale as well.
If you knew you were going to be sleepy, you could’ve as well gone to bed early.