Neologisms
Words that connect words or phrases are called conjunctions.
A newly coined word or phrase is called a neologism.
Creating your own words is called neologism. It refers to the process of making up new words or phrases that are not yet part of the common language.
Words joined with a conjunction are typically called compound words or phrases. These words are made by combining two or more individual words to create a new word or expression.
The pause between sound words or phrases is called a caesura. It is a brief pause or break in a line of poetry or music.
The term is transitional words / transitional phrases (sometimes called transition words / phrases).
Those are called "buzzwords" or "fad words," which are trendy terms or phrases that become popular quickly but fall out of favor just as fast.
Words or phrases that are the same forward or backward are called palindromes.
Figures of speech.
A word that joins words, phrases, or clauses is called a conjunction. Conjunctions are used to connect thoughts and ideas in a sentence.
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A lexicographer who creates new expressions, phrases, and words is often known as a neologist. Neologists invent new words to fill lexical gaps or to capture new concepts or trends in language and society. Their work contributes to the evolution and enrichment of the vocabulary.