dower vs life estate

dower and life estate both are nouns.

Word	Noun	Adjective	Verb	Adverb
dower	Yes	No	Yes	No
life estate	Yes	No	No	No

As nouns, life estate is a hypernym of dower; that is, life estate is a word with a broader meaning than dower:

dower: a life estate to which a wife is entitled on the death of her husband
life estate: (law) an estate whose duration is limited to the life of the person holding it

Other hypernyms of dower include estate for life.

dower (noun)	life estate (noun)
a life estate to which a wife is entitled on the death of her husband	(law) an estate whose duration is limited to the life of the person holding it
money or property brought by a woman to her husband at marriage

dower (verb)	life estate (verb)
furnish with an endowment