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

• emplaning
• emplaster
• emplasters
• emplastic
• emplastics
• emplastron
• emplastrons
• emplastrum
• empleach
• empleached
• empleaches
• empleaching
• emplecton
• emplectons
• emplectum
• emplonge
• employ
• employability
• employable
• employed
• employee
• employees
• employer
• employers
• employers' liability