Many new words were nominated for this year's buzzword awards.
new vocabulary item; new word (to learn)
Used in educational contexts for a word that is newly introduced in a textbook or lesson, or that a learner is encountering for the first time.
今日の授業では10個の新語を覚えました。
In today's class we learned ten new vocabulary words.
毎日新語を五つ覚えるようにしている。
I try to learn five new words every day.
Many new words have emerged along with the spread of the internet.
I looked up the meaning of the new word that appeared in the textbook.
That new word is set to be added to next year's dictionary.
An interesting new word became popular this year.
流行語 is a buzzword that is currently trendy, whereas 新語 is just any newly appeared word, popular or not.
死語 is a word that has fallen out of use, the opposite of 新語, a word that has just come into use.
Compound of 新 (new) and 語 (word, language). The term is a straightforward Sino-Japanese formation.