calc-tuff or calc-tufa same as tuff or tufa

• inductional
• induction by simple enumeration
• induction coil
• induction coils
• induction course
• induction courses
• induction hardening
• induction heating
• induction lamps
• induction lighting
• induction loop system
• induction motor
• induction motors
• induction port
• induction ports
• inductions
• induction valve
• inductive
• inductively
• inductiveness
• inductivities
• inductivity
• inductor
• inductors
• inducts