Bloc or Block?

Block and bloc are easy to confuse. Bloc is an alliance (usually of countries) united by a common interest. Block has many meanings. As a noun, block usually relates to something box shaped. As a verb, it usually means to prevent.

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EU is not a 'bloc' – don't call it one – The Irish Times

Two blocks, each having mass M, rest on frictionless surfaces as shown in the figure. If the pulleys are light and frictionless, and M on the incline is allowed to move down

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Black bloc - Wikipedia

SKYSCRAPER WALL BASE SMOOTH CHESTNUT BROWN

Writing Tip 405: “Bloc” vs. “Block” - Kris Spisak

When using geopolitical phrases such as 'Eastern bloc' and 'Western bloc', why is bloc not spelled as block? Is bloc a borrowed foreign word? - Quora

The Cambridge Guide To English Usage, PDF

BOREALIS WALL/CURB, DOUBLE SIDE, SMOKED PINE

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Cheddar in block Fromagerie Perron