Yes - although “technically“ Opi is the “diminutive“ form (less formal). Our family used the differences to distinguish between sets of grandparents - Oma/Opa for my father‘s parents, and Omi/Opi for my mother’s parents.
opi is a shortened version of opa, which means grandfather.
Opi is a regional version of Opa, which is grandfather.
Opa = Granddad, grandpa
Little one in German is der Kleine
der Blick = look/glance
Der Reis = the rice
English: "the shaver" = German: "der Rasierer".
The German word for ocean is (der) Ozean.
'Der Reise' is German, meaning 'the journey'. Note that in German all nouns are capitalised.
Eerne is not a German word. You probably mean in der schule lerne ich which translates as I learn in school.
Der Einwohner is German for resident. Die Einwohner is German for residents.
der Blumen :)
winter = der Winter.
rock = der Felsen