Ehh...
"Gra|vi|ty, Sing|u|lar|i|ty" 1, 2, 3, 4, 5, 6, 7, 8. 8 does not equal 5. Sorry.
Sorry, I'm not perfect at making haikus.
Try:
Gravity, Sovereign.
Gra|vi|ty, Sov|ereign.
It may be a longer word, but the English language allows only two syllables.
Meh, it works, although I'm not sure how I would consider Gravity a ruler, I guess you're leaning more towards the independent meaning of the word.
Changed accordingly in Haiku.