fix

修理(しゅうり)	Repair a machine. $$$

直す(なおす)	Fix a thing. Like 修理　（しゅうり）, but can also mean “to correct a mistake.” $$$

繕う(つくろう)	Two meanings. 1) to mend clothing, 2) to keep up appearances.

修繕する(しゅうぜん)	An archaic word for fix. Ignore this.