- 忘年交 wàngniánjiāo friends despite age differenceA friendship between people of different generations or ages who become close friends regardless of their seniority
- 忘年之交 wàngniánzhījiāo friendship between people of different agesA close friendship between people of different generations or ages, regardless of the age gap.
- 忘年之好 wàngniánzhīhǎo intergenerational friendshipA close friendship between two people of very different ages that ignores their age gap or generational difference.
