The verb for seat is sit.
As in "to sit on something or someone".
The verb form of "seat" is to "sit." For example, "I will seat myself at the table" is equivalent to "I will sit myself at the table."
That is the correct spelling of the noun and verb "seat."
Yes, "seat" can be used as a verb to mean to put or place someone in a particular position or location, such as seating guests at a table.
Seat is a common noun. "Get" is a verb, and "early" is an adverb.
Intransitive verbs do not have a direct object. Car is the direct object of drove, so drove is a transitive verb. Sat is the intransitive verb in that sentence.
Sat is the verb in that sentence.
sit down
The adjective is taken (occupied, reserved, refers to the seat). Although taken is a verb form, it is the past participle and the verb "is taken" does not apply here (as it would for 'The train will be taken more often than the bus'). We are not taking the seat anywhere.
Seat belt is a noun, when the words are used together to describe the common automobile safety feature.
The word "seat" can function as both a noun and a verb. As a noun, it refers to a place or structure designed for sitting, such as a chair or a bench. As a verb, it means to provide someone with a place to sit or to be situated. The context in which "seat" is used determines its part of speech.
It could be used as a noun -- one seat, two or more seats, or it could be a verb, as in "This restaurant seats 100".
The analogy answer to "sit is to seat as serve is to" is "service." In this analogy, "sit" is the base form of the verb, while "seat" is the corresponding noun form. Similarly, "serve" is the base form of the verb, and "service" is the corresponding noun form. The relationship between the pairs is that the verb denotes the action, while the noun represents the result or object of that action.