Everything written about the earth beast shows he is one person. The two horns symbolize that he will be a king in two ways. Some believe he will be a peaceful king, then later become a violent king, and some believe it has to do with one person being the 7th and 8th king mentioned in Rev 17.
Also, the AC and FP are two names for the same person which oddly enough could also be what the two horns symbolize.
That's probably what 99.99999999999999999999999999999999% of all people think. However the 10 horns are 10 kings. The two horns are two men.
We can prove that with scripture. The Antichrist comes to his end before the 6th seal, which is before the wrath of God. The false prophet is cast into the Lake of Fire at the end of Gods wrath.
Daniel 11
45 And he shall plant the tabernacles of his palace between the seas in the glorious holy mountain;
yet he shall come to his end, and none shall help him.
Daniel 12
1
And at that time shall Michael stand up, the great prince which standeth for the children of thy people:
and there shall be a time of trouble, such as never was since there was a nation even to that same time: and at that time thy people shall be delivered, every one that shall be found written in the book.
Revelation 19
20
And the beast was taken, and with him the false prophet that wrought miracles before him, with which he deceived them that had received the mark of the beast, and them that worshipped his image.
These both were cast alive into a lake of fire burning with brimstone.
In summary, the beast of the earth has two horns and is two men. One {the Antichrist) comes to his end at the end of the great tribulation and one (the false prophet) is cast into the lake of fire. The beast of the sea is also cast into the lake of fire.
And did I miss your answer what I used scripture to prove that Nimrod was the day star, or did you just not respond. Some times I don't get notice that someone responded and come across it later. If you did could you tell me the post number. If you didn't that's ok.