†  The word CHURCH  is truly ancient

(God(s) & worship being one of the most basic concepts of the human condition.)

It traces back to the PIE🔍  keue = to swell,  the basis for Greek kyrios = ruler, lord; evoking the idea of a swelling/ enlarging of a common human to one with status & power and then further to the ultimate swelling/ enlargement; rulership in the Gods, (which, if you are familiar with Greek mythology can all be said to be quite swollen in power and ego!)

Kyrios formed kyriake (oikia), kyriakon (doma) 

= the Lord's (house) & kyriakon, = of the Lord in Greek;

used to describe houses of Christian worship as early as 3rd c. AD

Borrowed by the Goths, as Proto-Germanic kirika = church 

still used in various forms throughout European language today- such as kyrka | Swedish, .....kyrkje | Norweigian,  kirk | Scottish,  kyrkja | Icelandic,  kirke | Dutch,  kirkko | Finnish &

kirche in German.

In Old English  it evolved to cirice = place of Christian worship, with the hard 'kay' sound eventually softening into the 'ch' sound at the front & end of modern 'church.'​