A Visit
Visit
noun, verbal noun, の adjective
You visit someone (or somewhere) with a question in mind. This is a visit. Any proper visit tries to answer a question, right? Like, "How have you been?" or "What kind of place is this?" If there's no question behind your visit, you're kind of just wandering around.
訪問 is a somewhat formal word for visiting somewhere or calling on someone, so you'll most often encounter it in writing or conversations in business or professional contexts.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
この間の訪問の際、何かお気に触るようなことをしてしまいましたか？
Is there something that got on your nerves when I visited you the other day?
もうちょっと安い訪問サービスはないんですか？
Don't you have a home-visit care service that is a bit cheaper?
家庭訪問は、先生が生徒の家庭を訪ね、家庭環境を観察し、保護者と話すためのものです。
Home visits are for teachers to visit students' homes, observe the home environment, and have conversations with parents.
日本では、通常歯医者に一回の訪問で治療を済ませてもらうことはできません。
In Japan, you usually can't get all your dental treatment done in just one visit.