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

• word pictures
• wordplay
• wordplays
• word processing
• word processor
• word processors
• word-puzzler
• word-puzzlers
• words
• word salad
• word salads
• wordsearch
• wordsearches
• words fail me
• wordsmith
• wordsmitheries
• wordsmithery
• wordsmiths
• word-splitting
• word square
• word squares
• Wordsworthian
• word wrap
• word wrapping
• wordy