Chinese languages

Hey guys,

I've seen both of those ways of saying a headache, but I'm not sure how to use each. I've tried searching on the net but I've only been able to verify that you can say "我头疼死了"

Are they use differently? Is 头疼 a verb and 头痛 a noun? Can you say
我头痛
我头很痛
我头痛死了
我有一个头痛

我头疼
我头很疼
我有一个头疼

writing all this, 我头疼死了 haha

头疼and 头痛 have the same meaning
i think both are noun