For describing a sentence type:
* Pangungusap na paturol: This directly translates to "declarative sentence."
* Pangungusap na nagpapahayag: This translates to "sentence that expresses" and can be used to describe a sentence stating a fact or opinion.
For describing something as a statement:
* Pahayag: This simply means "statement."
* Pagpapahayag: This means "expression" and can be used to describe a statement of opinion or belief.
Examples:
* "Ang araw ay sumisikat sa silangan." (The sun rises in the east.) - This is a pangungusap na paturol (declarative sentence).
* "Naniniwala ako na mahalaga ang edukasyon." (I believe that education is important.) - This is a pagpapahayag (expression) of opinion.
Ultimately, the best Tagalog equivalent for "declarative" depends on the specific context and what you want to express.