釘錘

nail hammer / claw hammer

nail / to follow closely / to keep at sb (to do sth) / variant of 盯[ding1]

to join things together by fixing them in place at one or more points / to nail / to pin / to staple / to sew on

hammer / to hammer into shape / weight (e.g. of a steelyard or balance) / to strike with a hammer

claw hammer