Refers to a narrow street branching off a main road, often with shops or houses. Common in urban contexts and place names.
Small izakayas line the side street in front of the station.
If you go through this alley, you'll come out onto the main street.
横丁 evokes a side street with a traditional or lively entertainment-district feel, whereas 裏通り is more neutral and simply describes a street behind the main road.
横町 refers to a small alley or lane lined with shops or houses, while 横道 is simply any road that branches off a main one.
Standard kanji spelling; common in addresses and place names.
Alternate kanji spelling using 町; less common but still seen.
Compound of 横 (yoko, 'side') and 丁 (chō, 'town block' or 'street'). The kanji 町 (machi/chō) is a variant used in some place names.