Taking English as an example, as I understand things, the case of a pronominal Subject is governed by the verb—it must be nominative:
- She loves elephants.
- *Her loves elephants. (ungrammatical)
Conversely, the verb agrees with the grammatical number of the Subject. So if the Subject is plural, the verb must be in a plural form (i.e. 1st, 2nd, 3rd person plural form):
- We love elephants.
- *We loves elephants. (ungrammatical)
These at first seem like quite similar things: each component must be compatible with the other. So what is the difference between government and agreement. Why do we not say that the Subject governs the verb, or that the Subject agrees with the verb?
In other words:
- What are the syntactic and semantic properties/elements of government and agreement?
Answers with regard to any particular language are appreciated.
I reserve the right to ask questions (I think) I know the answer to.