Objectification is viewing a person as a thing to be used as a tool of for decoration or to be written off as useless like rubbish.
So this covers prostitution, slavery, pornography, sexual abuse within intimate relationships, etc.
Objectification is a form of dehumanisation, but dehumanisation also includes ‘othering’ - seeing people as non-human, such as vermin, or a ‘plague’, or fantastical symbols or caricatures, which also deny a persons human sentience, such as a vampire, a zombie, a goddess, a nymph, or even other animals such as a broodmare.
Objectification, othering and dehumanisation can be misogynistic or not.
Misogyny is the hatred of women and it can take many forms, sometimes overt, like hatred and disgust about women’s periods, pregnancy, birth, breastfeeding, breasts, wombs, high-pitched voices, feminine fat-distribution, aging bodies, hip-movements, etc, or it can be slightly oblique and more like seeing women as inferior- hating women’s demands for safety, security and comfort while having a family, hating women’s caution and fearfulness, hating women’s lesser physical strength than men, hating women’s health issues - all things that perceived ‘inferior’ beings don’t deserve to ‘steal’ attention from their ‘superiors’ for.
Misogyny can also be one-step removed and not experienced with an emotion of hatred or disgust if it is simply learned and cultural, ‘the way things are’. The hatred and disgust is only felt when a woman upsets the status quo that depends on her oppression. People who ‘love’ and ‘feel no malice whatsoever’ towards women, can suddenly feel very irrationally angry and disapproving of a woman who goes against what is expected of her role. It’s latent misogyny, that most people have, even women and girls.