Incoherent & Inchoate

Incoherent means lacking orderly cohesion or relevance; not logically connected; disjointed; rambling; lacking orderly continuity: “The speech of the leader did not prove very effective because it was incoherent.”
Inchoate means initial rudimentary formulation of something; just begun; in the early stage; rudimentary; not yet clearly or completely formed or organized; imperfectly formulated; such as, an idea: “To manufacture a computer at a price of rs.2500 is yet an inchoate idea.”