What's the difference between duteous and luteous?

Duteous

Definition:

• (a.) Fulfilling duty; dutiful; having the sentiments due to a superior, or to one to whom respect or service is owed; obedient; as, a duteous son or daughter.
• (a.) Subservient; obsequious.

Example Sentences:

Luteous

Definition:

• (a.) Yellowish; more or less like buff.

Example Sentences:

• (1) These findings suggest that the synthesis of steroid hormones at the 7-8 weeks of pregnancy occurs mainly in the fetoplacentic system and that only small quantities of progesterone and estradiol are produced by the luteous body.