Whether or not the verb, its adjective and its noun would all be used to express the same meaning.
For example,
(a) verb → criticize.
(b) adjective → critical.
(c) noun → criticism.

(a)
Tom's parents highly criticized the school.
(b)
Tom's parents were highly critical of the school.
(c)
Tom's parents ' high criticism of the school.
Question: Do these three different expressions describe the same meaning?
and are they grammatically correct?

Question

Whether or not the verb, its adjective and its noun would all be used to express the same meaning.
For example, 
(a) verb  →            criticize.
(b) adjective →    critical.
(c) noun  →           criticism.

(a)   
Tom's parents highly           criticized the school.
(b) 
Tom's parents were highly critical of the school.
(c)  
Tom's parents ' high criticism of the school.
Question: Do these three different expressions describe the same meaning?
and are they grammatically correct?

Answer

Hi Song English. (b) is a correct sentence but (a) and (c) are not correct.

For (a) I would say "Tom's parents heavily criticized the school"
For (c) you could say "the school was met with strong criticism by Tom's parents" (although this is very formal).

Answer

In general, words have multiple meanings, and verb, adjective and noun forms derived from the same root can have very different meanings. Unfortunately, you just have to learn them. In your examples of  critical here the meaning is similar but there are contexts where that isn’t so. For example, ‘to criticize’ is negative but the adjective and noun form don’t have to be - for example ‘critical thinking’ and ‘literary criticism’. So you just can’t take any random sentence and change the part of speech!

Answer

The 3rd is not a complete  sentence: but the word is used correctly., heavily is the correct word to use as Jamie says above. You highly praise something and heavily criticize it-