A family of Microsoft word processing software products for creating web, email, and print documents.
In Word, the text formatting in table cells is connected to the document defaults and the Normal style in a way which is far from obvious. (The explanation is Word's convoluted hierarchy of styles & formatting.)
To make text formatting in tables more consistent, ensure that the document default font settings (in the Set Defaults tab of the Manage Styles dialog box) match the corresponding font settings for the Normal style (Modify Style dialog box).