'moderate' originates from Latin, specifically the word 'moderatus,' where 'moder-' meant 'to control or regulate.' 'Climate' originates from Greek, specifically the word 'klima,' meaning 'region or zone.'

'moderatus' transformed into the Old French word 'moderer,' and eventually became the modern English word 'moderate.' 'Klima' transformed into the Latin word 'clima,' and eventually became the modern English word 'climate.'

Initially, 'moderate' meant 'to control or regulate,' and 'climate' referred to a 'region or zone.' Over time, 'moderate climate' evolved to describe a climate that is neither too hot nor too cold.