There is clear distinction between thesaurus questions and on-topic word (or idiom)-request questions.
The former (usually) requests for a list of words like this one. Verbs for describing the action of defecating. It is readily answerable by searching the internet. This is the one link I found in a matter of a few seconds. If one user posts an answer using one word or idiom in the link, the number of answers to this question could be more than 100. The question itself is too broad.
The former (usually) doesn't have any context. What is the common term for the word “menstruation”?. This is the one link that I found in a matter of a few seconds. If one user posts an answer using one word or idiom, the number of answers could be more than 10.
The former (usually) is answerable for non-native speakers to look up their own language to English dictionary. I firmly believe the above two questions are answerable by this method. This is the typical thesaurus question.
The former (usually) lacks research. Why? Because the Original Posters don't bother to do it expecting this community to do research on their behalf. That's why those thesaurus questions are not good for this community.
For the above questions to be on-topic, I think the Original Posters should indicate how the word or idiom would be used as indicated in the closing reason for a Single-Word-Request question on English Language and Usage:
Questions on choosing an ideal word or phrase must include information on how it will be used in order to be answered. For help writing a good word or phrase request, see: About single word requests.
Unless the policy of this community is to make this forum another run-of-the-mill thesaurus dictionary site, I think we have to make clear distinction between the thesaurus questions and non-thesaurus questions. The more we become welcoming to this kind of questions, the more thesaurus questions we would see, e.g.:
- What are more common words/phrases for the word to "fart"?
- What are more common words/phrases for the word to "piss"?
- What are more colloquial verbs to replace to "fart"?
- What are more colloquial verbs to replace to "piss"?
The list goes on and on.
Do we need these questions? I would like to have your opinion on this.