Good
Good adjective - Beneficial to the health of body or mind.
Usage example: didn't like broccoli even though he knew it was good for him
Useful is a synonym for good in sensible topic. In some cases you can use "Useful" instead an adjective "Good", when it comes to topics like help, agree, beneficial, competent.
Mutual synonyms
Both words in one sentence
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After defeating it it would drop a few unique items, most of them very good and useful.
Source: Joke Item -
It appears to be good and useful, right up until it does something horrible to you.
Source: Tabletop Game / Numenera - The situation proves that both Jackrum and Blouse are good and useful in their own ways.
Cite this Source
Useful and Good. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/good/useful
Good & Useful. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/good/useful>.
Useful or Good. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/good/useful.
Google Ngram Viewer shows how "good" and "useful" have occurred on timeline