So according to Merriam Webster bread is: a usually baked and leavened food made of a mixture whose basic constituent is flour or meal
And cake is: A: a breadlike food made from a dough or batter that is usually fried or baked in small flat shapes and is often unleavened B: a sweet baked food made from a dough or thick batter usually containing flour and sugar and often shortening, eggs, and a raising agent (such as baking powder)
And yet some people don’t think that cake is bread.
What’s your opinion?
You asked the question, “is a cake a sort of bread” and the dictionary is explicitly stating “cake is a breadlike food”.
Are you instead asking if “lots of people” is a more reliable source than the dictionary?
Something can be breadlike without being bread, in a similar way to how whales are fishlike without being fish.
The dictionary doesn’t dictate how words should be used; it reports how people use them. Consulting a dictionary is a way to find out how “lots of people” use a word.
No but like something being bread like doesn’t mean that it is bread, just similar to bread.