ff or ff.

1. Fecerunt (Latin), (they) did it or made it
2. Folios (printing)
3. Following pages, lines, etc
4. Fortissimo (music)

FF

1. Form feed (computing)
2. French franc or francs

• nosebag
• nosebags
• noseband
• nosebands
• nosebleed
• nosebleeding
• nosebleedings
• nosebleeds
• nose candy
• nose cone
• nose cones
• nosed
• nosedive
• nosedived
• nosedives
• nosediving
• nose-flute
• nose-flutes
• nosegay
• nosegays
• nose heaviness
• nose-herb
• nose-herbs
• nose job
• nose jobs