What a beautiful day! Usage and difference of how and what in exclamatory sentences.

How is used in exclamatory sentences to modify predicate verbs, as adverbials in sentences, and what is used in exclamatory sentences to exclaim nouns, with different meanings and usages.

1 has different meanings. How means how, how, how much, and wha means how, really too much.

2. The usage is different. How is used to modify predicate verbs in exclamatory sentences, as adverbials in sentences, and what is used to exclaim nouns in exclamatory sentences. Nouns can be singular or plural forms of countable nouns or uncountable nouns.