>>590004
>Because your mom gives birth to you and Mary is infinitely younger than Christ
And yet she gave birth to Christ.
>Jesus says how even though he descends from David and he calls himself the son of David he technically isn't.
This is an exceptionally weak argument, considering how Matthew 1:1 (you can check in KJV if you want) claims that He is son of David precisely due to being his descendant. I don't know how to interpret the verse you posted, but its meaning is less clear and obvious than that of Matthew 1:1, so it must be interpreted in light of that latter verse.
>>590006
It would be technically correct and I suppose you can find some Catholic hymn or prayer which refers to one of these people as such, but Mary is a more appropriate person to be called such, first because she is His immediate biological mother, second because she brought him up. Analogically, using biblical terminology you could use the term "mother" to mean your grandmother or some other female ancestor, but your biological mother would still be the most appropriate to bear such a title.