試験 and 受験: what is tested and who takes an exam
Compare testing a new material's durability with a planned school examination. Identify the test target and the examinee's role alongside preparation for a test and gathered documents.
A test target and the examinee's role
試験 (しけん) means a test or examination, while 受験 (じゅけん) concerns taking an examination. A testing activity and its target differ in focus from the person participating in an exam.
Testing a material's durability shows a test target beyond a student's knowledge. Compare that target with a person's plan for a school exam without restricting all 試験 to school examination participation.
Tomorrow's test and a durability test
「明日の試験に備えて早めに寝る。」 — “I will go to bed early in preparation for tomorrow's exam.” The stated action is going to bed early in preparation for tomorrow's exam. It does not report completed exam participation or specify an exam subject or institution.
「新しい材料の耐久性を試験した。」 — “We tested the durability of the new material.” The tested target is the new material's durability. 試験した reports completed testing, without stating that the material passed or that a person passed an examination.
A planned examination and prepared documents
「来年は希望する学校を受験する予定だ。」 — “I plan to take the entrance exam for my preferred school next year.” The person plans an examination for a preferred school next year. Preserve 予定だ as a plan rather than completed participation.
「受験に必要な書類を期限までにそろえた。」 — “I gathered the documents needed for the examination by the deadline.” The completed action is gathering the required documents by the deadline. Read their relation to examination participation without adding submitted registration, actual exam-taking, or a passing result.
How do testing a new material's durability with 試験 and planning to 受験 for a preferred school differ in target and participant role?
Show the answer and why
The first focuses on testing the material's durability. The second focuses on a person's planned participation in a school examination. The test activity and target differ from the examinee's role, and the participation is still planned.

