Are there any words/idioms for describing some’s action, motivating/pushing someone in a wrong way to do wrong things. Ex: “X” intentionally motivates “Y” to do something but “X” already knows whatever he does to “Y” is wrong and it is going to harm him at all cost.

Animals, Birds, etc. are not able to speak like human to communication their thoughts. is it correct way of saying, Animals/Birds are speechless so we need to take care it well, Can be the word "speechless" used in this sentence?

I am having fever so I can't play today Vs I am suffering from fever so I can't play. what is the difference between these two sentences, "having fever" is the correct way of saying it? "I have a car", sounds natural to me, but having a fever, doesn't.

Is there any idioms for “aging is not an option/choice everyone must go through” Context: when a young immature disrespect/undervalue elderly people being old.

Are there any American idioms for “learning something at young age otherwise it will hard to learn at older age”. I know some idioms like you can’t teach new trick to old dog but it does not suit for the situation.

What is the difference between ID card and ID Badge. Both ID card and ID badge are same or not, because in some places people call it ID card and other places they call it ID badge

What are the idioms/proverb for If everybody accepts whatever said by a powerful person even he says something wrong or morally incorrect. Here I want to emphasize, he is powerful so he put others into submissive mode.

What is the difference between these two sentences. I am positive it will happen vs I believe it will happen.