Cassio and Iago.

In Othello, Shakespeare crafts Cassio and Iago to be two contrasting characters, and this is evident from the way that they speak to and about women in the play. Iago does not treat his own wife nicely as seen from Act 2 Scene 1 thus Shakespeare may have wanted to show us that Iago had no respect for any woman, not even his wife.

Iago sees women in a physical way, and makes sexual references towards them when speaking about women and Desdemona in the play. He says "thou shalt enjoy her" (on line 310 page 26) to Roderigo, referring to him merely using her to please him and then that is all she is worth. He refers to "housewives in your bed" and how he would "drown [himself] for the love of a guniea-hen" which shows that he seems to be thinking in primitive and rude ways about women.
Iago also refers to his scheme with references to the "womb", "If thou canst cuckold him, thou dost thyself a pleasure, me a sport. There are many events in the womb of time which will be delivered." (line 360 page 27). Not only does he refer to "wombs" but also cuckolding, disrespecting the women's choice as if they want to be cuckolded or not.

Cassio on the other hand refers to women, and Desdemona in particular (to Iago's delight), as "The riches of the ship" (line 82 page 33). She is likened to treasure and as soon as she enters he says "Hail to thee, lady!", clearly elevating her status even more. The first thing we hear Cassio say about Desdemona is that Othello is lucky to have her. He admires the two of them, and clearly sees Desdemona as something "divine" rather than a mere object belonging to Othello who he admires.

The way in which Iago and Cassio refer to women enables the audience to see their upbringing at the time and Shakespeare enables us to also understand what it was like for women at the time. It seemed as though the men were a lot more dominant, and although people of education and higher status like Cassio elevated their status, Iago shows us that women were under the rule of men and less trusted.

An effect that this has on the audience, especially the female audience at the time, is that it may make them dislike Iago even more to highlight his bad personality. It may have shocked some women to hear him refer to them in that way, thus enabling them to like Cassio, who is a clear gentelman, a lot more than him. Shakespeare may have done this to highlight the tragedy of the play, seeing as it is the character who is evil and not liked that triumphs over and poisons all the others.