Monster Beast and Spirit Beast:-
Normal Monster Beast are ranked from 1st to 9th rank and are sub divided into four stages
Initial Phase>>Middle Phase>>Late Phase>>Final Phase
If a Monster Beast surpasses the 9th rank then they can become a Spirit Beast
Monster Beast>>Spirit Beast
Spirit Beasts are divided into 7 main stages:
Monster Soldier>>Monster Elite>>Monster General>>Monster King>>Monster Emperor>>Monster Venerable>>((Calamity Lord))
All these main stages are divided into 4 sub stages:
Early>>Middle>>Late>>Peak
The higher rank they reach the higher Intelligence they will posses, It is not too rare for a spirit beast to posses high intelligence which is enough to talk like humans
After one reaches Calamity Lord they can cultivate like other cultivators and their cultivation stage will be same as others but they will not have to start from zero their initial cultivation stage will be Sky Body Formation Stage
The strength comparison of Monster Beast, Spirit Beast and others is like that
9th rank Monster Beast's strength is approximately equal to the strength Dao Comprehension Stage cultivators
Spirit Beast strength levels:-
Monster Soldier = Human Venerable Stage
Monster Elite = Earth Venerable Stage
Monster General = Heaven Venerable Stage
Monster King = Core Forming Stage
Monster Emperor = Golden Core Stage
Monster Venerable = Core Breaking Stage
Calamity Lord = Sky Body Formation Stage
The comparison above is when an average monster beast meets a genius cultivator of the equal cultivation stage and if the cultivator is also average then the monster beast have high chances to win
For example if an average Monster King meets an average Core Forming Stage cultivator then the Spirit Beast can easily win the battle because of their tough physique they have the advantage in battle
Once a Spirit Beast reaches Calamity Lord stage they can transform into a humanoid form
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Beast Race or Demi-Human Race looks similar to Monster Race but they are different
Beast Race or Demi-Human:
In Beast Race the newborn baby is like a human baby with some features resembling a monster beast like having animal like ears, tail, eyes.. etc and as their strength rises they becomes capable of hiding these distinctive features and can completely look like humans
But with training they can also transform in a humanoid beast form which can increase their battle strength by a lot
But this is not the last form if they train more harshly then they can unlock their final form which is full beast form in that form their body will turn into a monster beast whom they resembles and even when they turn in that form they can keep their intelligence which greatly increases their strength
Monster Race:
Genetically Monster beast and Spirit Beast are both type of monster race whether when they have low intelligence or high intelligence
But the Monster Beast and spirit beast that are born with high intelligence does not accept monster beast or spirit beast with low intelligence as their own
If a Monster Beast gains high intelligence or born with it then its decedents will also have high intelligence than usual
For example the descendants of a Calamity Lord will always have high intelligence even when they do not have humanoid form because of their weak cultivation base
In the end Monster Race consists of Monster Beast and Spirit Beast with high intelligence
Note: The biggest difference between Monster Race and Beast Race or Demi-Human is Monster Race have monster core to cultivate while Beast Race or Demi-Human Race have dantian to cultivate
Note; Many from Monster Race looks similar to Beast Race or Demi-Human Race because of their humanoid form