whallah

As an interjection whallah

is voila; ta-da, presto; lo and behold.

As a noun challah is

(countable) a traditional bread eaten by ashkenazi jews, usually braided for the sabbath and round for yom tov.

As interjections the difference between presto and whallah

is that presto is used by magicians when performing a trick; ta-da; voilà while whallah is voila; ta-da, presto; lo and behold.

As an adverb presto

is very fast or quickly; a directive for the musician(s) to play in a very quick tempo.

As a noun presto

is a pair of fives as a starting hand in Texas hold 'em.

Whallah is a alternative form of wallah.

As interjections the difference between wallah and whallah

is that wallah is misspelling of voilà|lang=en while whallah is voila; ta-da, presto; lo and behold.

As a noun wallah

is a servant or other person responsible for something, often specified before it, for example kitchen wallah.

Whallah is a alternative form of voila.

As interjections the difference between voila and whallah

is that voila is {{borrowed}} Lo, there it is; ta-da; presto; behold; bam while whallah is voila; ta-da, presto; lo and behold.