In modern Chinese:

太太 is a common title for "Mrs." or a noun for "married woman" (in general)

Mrs. : a title used before a surname or full name to address or refer to a married woman, or a woman who has been married, without a higher or honorific or professional title.

夫人 is a more formal honorific or title for "Madam" or a noun for "married woman" (of high status)"

Madam :(often initial capital letter) a polite term of address to a woman, originally used only to a woman of rank or authority:

女仕 is another honorific for women. A formal/ polite term for addressing to adult woman (single or married)

The difference between 太太 and 夫人 is somewhat similar to San (さん) and Sama (様) in Japanese

In modern Chinese:

太太 is a common title for "Mrs." or a noun for "married woman" (in general)

Mrs. : a title used before a surname or full name to address or refer to a married woman, or a woman who has been married, without a higher or honorific or professional title.

夫人 is a more formal honorific or title for "Madam" or a noun for "married woman" (of high status)"

Madam :(often initial capital letter) a polite term of address to a woman, originally used only to a woman of rank or authority:

In short, 太太 is a general title for married women; 夫人 is a more formal/honorable title for married women;

女仕 is another honorific for women. A formal/ polite term for addressing to adult woman (single or married)

The difference between 太太 and 夫人 is somewhat similar to San (さん) and Sama (様) in Japanese

In modern Chinese:

太太 is a common title for "Mrs." or a noun for "married woman" (in general)

Mrs. : a title used before a surname or full name to address or refer to a married woman, or a woman who has been married, without a higher or honorific or professional title.

夫人 is a more formal honorific or title for "Madam" or a noun for "married woman" (of high status)"

Madam :(often initial capital letter) a polite term of address to a woman, originally used only to a woman of rank or authority:

The difference between 太太 and 夫人 is somewhat similar to San (さん) and Sama (様) in Japanese

In modern Chinese:

太太 is a common title for "Mrs." or a noun for "married woman" (in general)

Mrs. : a title used before a surname or full name to address or refer to a married woman, or a woman who has been married, without a higher or honorific or professional title.

夫人 is a more formal honorific or title for "Madam" or a noun for "married woman" (of high status)"

Madam :(often initial capital letter) a polite term of address to a woman, originally used only to a woman of rank or authority:

女仕 is another honorific for women. A formal/ polite term for addressing to adult woman (single or married)

The difference between 太太 and 夫人 is somewhat similar to San (さん) and Sama (様) in Japanese