追求

1. Origins, structure, and basic meaning

• Structure: 追求 (ついきゅう) means persistently pursuing a goal or value. 追求してきた is an accumulated process; 追求したい is intention.
• Basic usage: A craftsperson has long pursued tool usability; a speaker wants to pursue work quality as well as profit.

2. Common pitfalls and similar expressions

• Long-running improvement and future choice of values
  • Targets are 使いやすさを and 質も. してきた reaches from past to present; したい expresses a goal not yet realized.