What kind of concrete block is this?

[Karlars]

Hello. Inexperienced beginner question but would appreciate help.
What are these concrete blocks called that are mortared together? See pictures. I want to build a small plinth with the same type of blocks but only find leca-blocks or form blocks when I google, but that's not it.
These have been used to build the garage wall and they resemble those I have in the basement walls (50s?)

Regards K

 

[useless]

Concrete block is my guess.

https://www.benders.se/sortiment/murblock/murblock-betoghalsten-e993241c/betonghalsten/

 

[ribbones]

Concrete hollow block

 

[KnockOnWood]

Doesn't it look quite similar to regular concrete hollow blocks
Maybe you can measure and see which block matches the dimensions?

Oops, third in line. Things are moving fast here

 

[Karlars]

It seems reasonable that it is concrete block. Thanks everyone for the answers! It was harder to google than you might think