Most often the use of the term "scholarly" refers to journals which are peer-reviewed or refereed. A peer-reviewed article is an article that has been published in a scholarly journal after being reviewed by professional experts in the author's field (i.e. their peers) before it was published. This means that the reviewers examined the author's research methods, their cited sources, the contribution this article has to the field, and the author's other published works to determine the article's credibility. A peer-reviewed article, by its very nature, is one that experts in the field have approved and that is therefore an appropriate source of information to be used in your scholarly research.
By contrast, a website you found through a Google search may not have been written by an expert or contain any validated, authoritative information. There are millions of resources online, but it is important to understand that many sources are full of unverified or false information.
For more detailed information about finding peer-reviewed sources through library databases and resources, see this link.
