could

As verbs the difference between ought and could

is that ought is (obsolete) (owe) or ought can be (auxiliary) indicating duty or obligation while could is (can).

As a pronoun ought

is anything .

As an adverb ought

is at all, to any degree.

As a noun ought

is a statement of what ought to be the case as contrasted with what is the case or ought can be cipher, zero, nought.

As an adjective likely

is probable; having a greater-than-even chance of occurring.

As an adverb likely

is similarly.

As a noun likely

is something or somebody considered likely.

As a verb could is

simple past of can.

As a verb could

is (can).

As a conjunction ca is

because.

As verbs the difference between need and could

is that need is to be necessary (to someone) while could is (can).

As a noun need

is a requirement for something.

As verbs the difference between did and could

is that did is simple past of do while could is simple past of can.

As verbs the difference between could and is

is that could is (can) while is is i'm.

Have is a contraction of could.

As verbs the difference between could and have

is that could is simple past of can while have is to possess, own, hold.

As verbs the difference between shall and could

is that shall is (modal auxiliary verb|defective) while could is (can).