Slang is the use of informal language to give a different meaning to words.
Colloquialism is the use of conversational language which makes use of informal language to talk to someone else.
As a result of this, the mix of these things helps contribute to the text effectiveness by:
Please note that your question is incomplete as it does not specify the author and i gave you a general overview which should be helpful.
Read more here:
https://brainly.com/question/12954068