newlywed couple; newlyweds
Refers to a couple who have recently married. Commonly used in contexts like honeymoons, new homes, or early married life.
The newlywed couple moved into their new home.
That newlywed couple looks very happy every day.
新婚 refers to the state of being newly married (e.g., 新婚旅行 honeymoon), while 新婚夫婦 specifically refers to the couple themselves.
夫婦 means 'married couple' in general, without the 'newly' nuance.
Compound of 新婚 (newly married) + 夫婦 (married couple).