Q. Is login a verb or only a noun? I’m wondering because the following sentence seems wrong to me: “To login to your personal account, enter your user name and password.” Shouldn’t it say log in as two words rather than login?

Q. When I entered an incorrect password for your website, I received this message: “Invalid Log In.” Shouldn’t “log in” be “login” in this case?

Q. I haven’t paid much attention to style until recently when I had to begin doing some editing of copy again. Now I find that “copyeditor” is one word. What about people who edit books? Are they bookeditors? What about newspaper editors? Are they newspapereditors? Please justify. Thanks from Ice Age copy editor.

Q. There’s a club for people who’ve worked at my office for twenty-five or more years. It is called the Twenty-Five Year Club. I am wondering why they never added a hyphen between “five” and “year” and also if it’s okay to retain the capital letters for all the words that are hyphenated. I don’t want to rock the boat around here for a club that’s been in existence longer than all of us have been in the Publications Office. We are preparing the program for their annual dinner and latest round of inductees. Should we let them retain their old name? Has this come up in other places?

Q. What style do you recommend for the words “health care,” two words or one? If two words are preferred, do you hyphenate it when it appears as an adjective, as in health-care company? Thanks.

Q. I work for a journal at a government agency. The departments and committees and journals within the agency all have varying styles, especially for hyphenation and compounds, which resulted in the following really ugly title: Influenza Vaccination of Health-Care Personnel: Recommendations of the Healthcare Control Practices Advisory Committee (HICPAC) and the Advisory Committee on Immunization Practices (ACIP). It looked even worse in big, bold type. What should we have done?

Q. I am a primary teacher. I am currently teaching about compound words and have discovered that I am making errors. Some words that I thought were compound are not. However, when I look them up in different sources or look at signs, they are written both as compounds and closed. Would you please tell me how I can find a list of compound words without looking up each word in the dictionary? Thank you.

Q. I am editing a language arts textbook. The client wants to describe the activity of astronauts as “moonwalking.” As in, “When the moonwalk was completed, the astronauts were able to return to the lunar module, which would then reconnect with the command module.” Merriam-Webster’s only definition of the closed compound is the dance move made famous by Michael Jackson. Although they probably won’t let me change it, I’d like to know if my instincts are correct and this should read “moon walk.”

Q. I am editing a medical index using the “word-by-word” system, and having some trouble with hyphenated words. Some terms, like “non-ionic,” feature a hyphenated word that is not a compound word. Does “non-ionic” come before “nonclostridial?” Also, do hyphenated compound words like “arterial-gas” come before or after a non-hyphenated compound word like “arterial oxygen?” Thanks—this is giving me a headache!

Q. With words such as “PowerPoint,” the capital letters are retained when the words are melded. Is there a label for this category of words?