momentous vs momentary
Definitions
adjective
- of very great significance
Examples
I am deeply honoured to be invited to this momentous occasion.
This day will be momentous in the history of all time.
The feeling was that the picture conveyed a joyful and momentous moment in their lives in a way that was arresting and memorable.
Definitions
adjective
- lasting for a markedly brief time
Examples
Cai's impact on the Scottish capital will not just be a momentary intervention on the city skyscape.
a momentary glimpse
I had a momentary image - very clear, very politically incorrect, and very likely brought on by Pam's mention of the cartoon books I'd once drawn for a little sick girl - of a large talking skunk in a beret, Monsieur Pepé Le Pew, strutting around my daughter's pension (if that was the word for a bedsitter-type apartment in Paris) with wavy aroma lines rising from his white-striped back.