Final answer:
Modifying words into different parts of speech and adding suffixes like '-ess' create new words; revisions for clarity involve omitting unnecessary phrasing and ensuring cohesive sentence structure.
Step-by-step explanation:
Modifying the given words into different parts of speech involves looking at the root of each word and altering it to form a new word that may serve as a noun, verb, adjective, or adverb. For example, the word 'unite' could be transformed into 'unity' to become a noun, 'united' as an adjective, or 'unifying' as a verb. Similarly, 'receptive' can become 'receptiveness' as a noun, 'receptively' as an adverb, or maintain 'receptive' as an adjective. When adding the suffix '-ess' to stem nouns, some changes may be required. For instance, 'incorrect' can change to 'incorrectness', and 'unirritable' can become 'unirritableness', often modifying the stem to maintain proper spelling and pronunciation.
To improve the clarity of writing, it is recommended to omit needless words, focusing on stronger verbs and concise expressions. This is further exemplified by transforming wordy phrases into more direct statements. Additionally, the principle of old-before-new can be applied to sentence structure to enhance cohesiveness, as shown in the rephrasing of verbose sentences into more cohesive and connected forms.