大家: expert / 対価: compensation, equivalent value / 退化: degeneration / 大火: large fire / 耐火: fireproof / 大過: serious error

大会: convention / 大海: large sea, ocean / 退会: withdrawal, especially from a group of some kind

退会: withdraw

平ら: flatness

平ら: flat, even, level, smooth, having no variation in altitude

平: a male given name / 平: a surname

Woof, bark, the sound made by a dog.

(informal) One.

WAN (wide area network)

scimitar, machete