Initial Consonant is the beginning consonant sound of a word. Example: bottom "b" is the initial consonant;  Medial is the middle consonant:  Bottom  "t" is the medial consonant sound;  Final is the ending consonant sound: Bottom  "m" is the final consonant sound.

A simple predicate has one verb; a compound predicate has 2 or more verbs separated by a conjunction.  Simple Predicate is underlined: My mother cooked supper. (cooked is the verb)  Compound Predicate is underlined: My mother cooked supper and served it to us. (cooked and served are the verbs; "and" is the conjunction.