'Alternate' means 'one following on from the other'. So 'alternating' current describes a current that flows first in one direction, then in the other. Not to be confused (although it often is!) with 'alternative', which means 'a choice between two', as in 'We could either go this way, or we could choose the alternative route'.
In class my friends was drawing a picture alternatively I finished my maths
The recipe calls for mayonnaise, but alternatively you could use molasses.
A comma typically comes before "alternatively" when it is used to join two independent clauses in a sentence. For example: "You can go to the park for a walk, or alternatively, you can stay home and relax."
You could walk to the school in our neighborhood or alternatively, take a bus across town to Washington High. She may be adopted by her foster family or alternatively face going back to an institution.
Alternatively means in place of something else. Basically it is the choice between two or more items. Example would be Susan wanted pizza but alternatively will take a hamburger.
She could serve fruit platters for lunch; or, alternatively, she might provide only vegetables.
in place of, or as an alternative to; "Felix became a herpetologist instead"; "alternatively we could buy a used car"
alternatively
Or
for exemple: I will make a chocolate cake or alternatively I could make an apple pie.
The sun and the moon alternates from morning to night or evening to dawn.
It is an adverb