Synonyms are words that substitute in a context for another words. Synonym is nothing but the similar meaning of a particular word or its semantic relation. So,
SYNONYM IS A WORD OR A PHRASE THAT MEANS THE SAME AS ANOTHER WORD OR A PHRASE IN THE SAME LANGUAGE.
Synonyms add interest and life to reading and writing. Synonyms can be any part of speech, as long as both members of the pair are the same part of speech. Generally, you wouldn't use more than two synonyms in the same sentence. Instead, to give variety to a paragraph, you'd use a synonym as a similar word to avoid repeating the same words from sentence to sentence or paragraph to paragraph. An example of synonyms is the words car and automobile.
More examples of English synonyms are:
"student" and "pupil"
"petty crime" and "misdemeanour"
"buy" and "purchase"
"sick" and "ill"
"quickly" and "speedily"
"on" and "upon"
Note that synonyms are defined with respect to certain senses of words; for instance, pupil as the "aperture in the iris of the eye" is not synonymous with student. Similarly, he expired means the same as he died, yet my passport has expired cannot be replaced by my passport has died.
In English, many synonyms evolved from the parallel use, in the early medieval period, of Norman French (from Latin) and Old English (Anglo-Saxon) words, often with some words being used principally by the Saxon peasantry ("folk", "freedom", "bowman") and their synonyms by the Norman nobility ("people", "liberty", "archer").
Synonyms of Long
elongated, lengthy, outstretched, extended
Synonyms of Create
Cause, make, construct
Synonyms of Small
Little, Mini, short, tiny, fine, petite
Synonyms of Jump
Leap, Bounce, Hop, Vault, Spring