noun:

• approx. 80% of the way up a mountainside
• view of a light green mountain; mountain that appears green from afar

noun:

• AF; Audio Frequency - IT term

noun:

• first day of cherry blossoms reaching full bloom; first day in which at least 80% of the somei yoshino cherry blossom has opened (in a specific region or place)

noun:

• Shoki the Plague-Queller; Zhong Kui (traditional Chinese deity said to prevent plagues and ward off evil beings); vanquisher of ghosts and evil beings, and reputedly able to command 80,000 demons
• Shoki (WWII fighter aircraft)

noun:

• tone generator; audio signal generator; AF signal generator

noun:

• eating moderately; moderation in eating; eating until 80% full [literal]

noun:

• Pareto principle; Pareto's law; 80-20 rule

expression / noun:

• longevity celebration (of age 42, 61, 70, 77, 80, 88, 90 or 99)

noun:

• cupronickel (alloy of approximately 80% copper and 20% nickel) ➜ 白銅

noun:

• grain (1-7000 of a pound, approx. 64.80 mg)
• grain (wheat, etc.) ➜ グレーンウイスキー

adjectival noun / noun:

• mystery; something inexplicable; wonder; miracle - four character idiom ➜ 不思議
• unfathomable (of a Buddha's abilities)

numeric:

• 10^64 (or 10^80)