1. Capable of acting on or influencing each other
   - interactive

See also: interaction, mutual, reciprocal

• facial index
• facial muscle
• facial nerve
• facial profiling
• facial recognition
• facial tissue
• facial vein
• facially
• facies
• facile
• facilitate
• facilitation
• facilitative
• facilitator
• facilitatory
• facility
• facing
• facing pages
• facsimile
• facsimile machine
• fact
• fact mood
• fact of life
• fact-finding
• facticity