Informally
Part of speech: adverb
Definition: In an irregular or informal manner; without the usual forms.
Colloquially
Part of speech: adverb
Definition: In a colloquial manner.
Informally as an adverb is in an irregular or informal manner; without the usual forms. while Colloquially as an adverb is in a colloquial manner.
Part of speech: adverb
Definition: In an irregular or informal manner; without the usual forms.
Part of speech: adverb
Definition: In a colloquial manner.
We hope you now know whether to use Informally or Colloquially in your sentence.