The phrases "mind your words" and "choose your words carefully" are very similar in the context of not offending somebody. However, they do not have exactly the same meaning and might convey slightly different messages in a different context.
1) When you have dinner with the kind, make sure you mind your words/choose your word properly.
2) Please mind your words/choose your word properly as you will not offend anybody.
The phrases "mind your words" and "choose your words carefully" are very similar in the context of not offending somebody. However, they do not have exactly the same meaning and might convey slightly different messages in a different context.
Two things to note:
- 'wordS' in both expressions
- 'choose' needs an adverb: 'carefully' and 'with care' are the most common collocations
You can also use 'pick' like 'choose'.
b
Afterthought -about your title:
Are the meanings of A and B the same
Do A and B mean the same?
Do A and B have the same meaning?
Are the meanings of A and B the same?![]()
But
Are A and B have the same meaning?
b
These two phrases "mind your words" and "choose your words" are very similar though there's a small difference because when you say "mind your words" that means be careful of what you are saying so you won't offend anybody and when you say choose your words you're just telling the person to choose the appropriate word to be formal.