Questions fall under the umbrella term asking. More concepts can be found there.

General question

General questions have yes, or no answers.

• yes-no_question

Choice question

Choice questions ask to choose between two or more possibilities.

• choice_question

Special question

Special questions are called special, because they require a more detailed response than a general question. A special question begins with a question word.

• asking_how
• asking_what
• asking_when
• asking_where
• asking_who - Also whom, whose etc.
• asking_why

Tag questions

Tag questions are attached to ends of statements and ask for clarity, agreement, or confirmation of the statement.

• tag_question

Conditional question

This category includes what are know as what if statements. These types of questions mainly involve hypothetical scenarios.

• conditional_question

Indirect question

Indirect questions are essentially statements that contain an embedded question.

Other

There are questions that don't cleanly fit into any of the aforementioned categories, at least not by how we tag them. One such example are statements that are used in a questioning manner. Some of these fit into a specific category, but others leave it unclear and ambiguous what is being asked. This form of question may be tagged as questioning_tone and may overlap with other question categories.