The etymology of adoration

Benedict XVI at World Youth Day:

the different nuances of the word ‘adoration’ in Greek and in Latin. The Greek word is ‘proskynesis’. It refers to the gesture of submission, the recognition of God as our true measure. [...] The Latin word is ‘ad-oratio’, mouth to mouth contact, a kiss, an embrace, and hence ultimately love. Submission becomes union, because he to whom we submit is love.