Final answer:
Most nouns form adjectives by adding specific suffixes or modifying the noun itself. However, some of the provided nouns do not have a direct adjectival form and are instead used as noun modifiers to perform the function of adjectives.
Step-by-step explanation:
When creating adjectives from nouns, you could typically add suffixes to the nouns or use the nouns in a compound construction. However, for the list provided (success, yellow, rhythm, poison, child, star, courtesy, harm, accident, length), not all nouns directly form adjectives with a regular pattern or suffix. For many of these words, the most commonly accepted adjectival form simply adds -ful (e.g., successful, delightful), uses a part of the word in a new form (e.g., rhythmic, poisonous), or remains unchanged (e.g., star, as in star football player).
Examples of these adjectives in context could be:
It is important to note that some nouns do not have a straightforward adjectival form. In such cases, often the noun is used as a noun modifier, such as 'child psychologist' where 'child' is a noun acting as an adjective, or 'star athlete' with 'star' performing a similar function.