Stylistic use of synonyms

Conversion is the process of coining a new word in a different part of speech and with a different distribution but without adding any derivative element (a doctor - to doctor, wireless - to wireless). As the result, the two words are homonymous, having the same morphological structure and belonging to different parts of speech. A grammatical homonymy of two words of different parts of speech does not necessarily indicate conversion. It may be the result of the loss of ending. In case of conversion a new word acquires new semantic and grammatical characteristics as compared with the original word, and these changes find their expression in the new syntactical functions of the word formed.
Conversion is a very productive way of forming new words, chiefly verbs, and not so often nouns. As a rule, conversion involves monosyllabic words of a simple morphological structure [ a tube - to tube ], but words with affixes are quite possible [ a commission - to commission ]. The productivity of conversion in forming verbs from nouns is explained by the fact that in modern English there are no competitive ways as composition is almost non-existing, and affixation is extremely scarce. There exist only three verb-forming suffixes which can be combined with a noun-stem [ ate, ise, ity ], but they are stylistically limited to learned and technical formations. In most cases no verb is formed by means of conversion if there is a suffix-verb in the language. Still there are some instances when from one and the same stem verbs are derived both by means of conversion and affixation [ to mature / to maturate, to character / to characterise ]. Such verbs, as a rule, differ in their semantic structure and sphere of usage [ to mature - созреть; доводить до зрелости; to maturate - нагноиться; to character - запечатлевать; to characterise - характеризовать; служить отличительным признаком ]. Nouns are usually derived from verb-stems [ to smoke - a smoke ]. Such formations frequently make part of verb-noun combinations [ to have a smoke, to take a walk, to have a look ].