• 軒のき — eaves
• 軒先のきさき — eaves/front of a house
• 軒下のきした — under the eaves
• 一軒家いっけんや — detached house
• 軒並みのきなみ — in a row / across the board
• 軒数けんすう — number of houses/shops
• 軒を連ねるのきをつらねる — to stand side by side (buildings)

軒 combines 車（くるまへん） with a phonetic element 干 that signals the On-reading ケン. Core sense is the projecting eave/beam of a house, which extends to the counter for houses (〜軒). Collocations like 軒先 and 軒並み are frequent in everyday Japanese.