How to say "Start" in Japanese

When translating "start" into Japanese, you must choose carefully between 着手する and 着工. In Japanese, 着手する (ちゃくしゅする (chakushusuru)) is typically associated with "to start work, to embark on, to commence" (Syllabus Level: N2) and represents Often used for formally or significantly beginning a project, task, or investigation.. On the other hand, 着工 (ちゃっこう (chakkou)) maps to "start of construction" (Syllabus Level: N2) and represents Specifically refers to the commencement of construction work on a building or project. Often used with 「する」. A literal translation of "start" can often sound unnatural to native Japanese speakers if mixed up!