Wordmark? Emblem? Abstract mark? If these sound new to you, check out our article on the 7 types of logos. Specifying your desired logo format will save you and your designer(s) a lot of time during the design process. If you’re not totally sure on the format, feel free to suggest a couple formats that you think might work. Your designer(s) might be able to show you a couple different options.
Design style
In addition to logo type, you can mention style as well. Some examples of logo design styles are vintage, flat, minimal, or skeuomorphic.