'obviously' originates from Latin, specifically the word 'obvius,' where 'ob-' meant 'against' and 'via' meant 'way.' 'Related' comes from Latin 'relatus,' the past participle of 'referre,' meaning 'to bring back.'

'obvius' transformed into the Old French word 'obvie,' and eventually became the modern English word 'obvious.' 'Relatus' evolved into the Old French 'relater,' and eventually became the modern English word 'related.'

Initially, 'obvious' meant 'in the way of,' but over time it evolved into its current meaning of 'easily perceived or understood.' 'Related' has maintained its meaning of 'connected or associated with.'