The difference between Sooky baby and Suck

Sooky baby as a noun (Atlantic Canada):

Sook; a crybaby or timid person.

Suck as a noun:

An instance of drawing something into one's mouth by inhaling.

Suck as a noun (vulgar):

Fellatio of a penis.

Suck as a noun (Canada):

A weak, self-pitying person; a person who won't go along, especially out of spite; a crybaby or sore loser.

Suck as a noun:

A sycophant, especially a child.

Suck as a verb (transitive):

To use the mouth and lips to pull in (a liquid, especially milk from the breast).

Suck as a verb (intransitive):

To perform such an action; to feed from a breast or teat.

Suck as a verb (transitive):

To put the mouth or lips to (a breast, a mother etc.) to draw in milk.

Suck as a verb (transitive):

To extract, draw in (a substance) from or out of something.

Suck as a verb (transitive):

To work the lips and tongue on (an object) to extract moisture or nourishment; to absorb (something) in the mouth.

Suck as a verb (transitive):

To pull (something) in a given direction, especially without direct contact.

Suck as a verb (transitive, slang, vulgar):

To perform fellatio.

Suck as a verb (chiefly, US, , intransitive, slang):

To be inferior or objectionable: a general term of disparagement, sometimes used with at to indicate a particular area of deficiency.