A: Hey!

We limit articles, while you can create any number of different blogs(design/domain/hosting can be different).

One Blog on our sub-domain is what we are calling each individual Blog - one which can have multiple articles inside. The articles are limited as that's what costs us.

Like a travel blog on https://mytravels.com/blog counts as one Blog. You can have 100 articles inside. Or you can have 5 different blogs - one for travel, one for cooking, for tech etc - and their articles combined come too 100.
Both of these are billed the same. Hope this cleared it up!