(1)worth, when used as an adjective, means "yes? Value; Worth doing ";

This trip is really expensive, but it's worth it. The trip was expensive, but it was still worth it.

(2)worthy as an adjective means "worthy"; Respectable. "

He devoted his whole life to a noble cause. He devoted himself to this noble cause.

2. When you are a noun.

(1)worth, when used as a noun, means "something of value ..."; Meaning, function ".

The contribution of the soldiers is very valuable. The contribution of soldiers is of great significance.

(2)worthy as a noun means "great man, great man".

Some local people will attend the meeting. Some local celebrities will attend the meeting.

3. Syntactic function

(1)worth usually only makes predicative, not attributive before nouns;

Example: It's not worth the trouble. It's not worth the trouble.

(2)worthy can be used as a predicative and an attribute.

He is a respectable gentleman. He is a respectable gentleman.

4. Modify habits

(1)worth is customarily not decorated with very (well); Can be used to express similar meaning);

(2) worthy and valued can be modified by adverb very.

That deserves our attention. That matter deserves our attention.