考 is built from the 耂 (old (top)) and 丂 (hooked breath (phonetic)) components.
It belongs to a phonetic family with 巧 and 拷 — they share the 丂 component and the reading コウ.
A common word using 考 is 考える (かんがえる), meaning “to think (about); to consider”.
Don't confuse it with 巧, 拷, and 朽.