Similar but not exactly the same. The Traditional IRS is something you set up and if you have earned income you are allowed to contribute a maximum amount each year. A 401(k) is set up by an employer and has a higher limit allowed for contributions.
For 2022, 2021, 2020 and 2019, the total contributions you make each year to all of your Traditional IRAs and Roth IRAs can't be more than:
Deferral limits for 401(k) plans
The limit on employee elective deferrals (for traditional and safe harbor plans) is:
Generally, you aggregate all elective deferrals you made to all plans in which you participate to determine if you have exceeded these limits. If a plan participant’s elective deferrals are more than the annual limit, find out how you can correct this plan mistake.
And Yes, you can contribute to both a 401(k) and an IRA, if your income does not exceed the IRS limits.
But...if you are asking if you can take your 401k contributions (box 12 Code "D" on your W-2) , adn place that same $$ amount into the Traditional and Roth IRA Contributions section on teh Deductions&Credits page ??
The answer to that is a big NO ! a 401k is not an IRA...and you already would have your regular 401k contributions deducted from your taxable wages in box 1 of that W-2...so you don't get to take the deduction twice.