(someone else's) parents; both parents
Honorific term used to refer to someone else's parents politely. Not used for one's own parents.
Are your parents doing well?
His parents are very kind people.
ご両親 adds the honorific ご- and is used when referring to someone else's parents, while 両親 is neutral and used for one's own parents.
Standard polite spelling with honorific prefix ご.
Formal or literary spelling using the kanji 御 for the honorific prefix.
Combination of the honorific prefix ご and 両親 (ryoushin, 'both parents').