Difference between Suck Up and Kowtow

SUCK UP vs KOWTOW: NOUN

A former Chinese custom of touching the ground with the forehead as a sign of respect or submission
The act of kneeling and touching the forehead to the ground.
An obsequious act.
The prostration made by mandarins and others to their superiors, either as homage or worship, by knocking the forehead on the ground; same as kotow. There are degrees in the rite, the highest being expressed by three knockings.
The act of kowtowing.

Take in, also metaphorically
To adulate or flatter somebody excessively, generally to obtain some personal benefit or favour.
To absorb fluid
Try to gain favor by cringing or flattering
Ingratiate oneself to; often with insincere behavior

To kneel and touch the forehead to the ground in expression of deep respect, worship, or submission, as formerly done in China.
To show servile deference. : fawn.
To perform the kowtow. Same as kotow

Play up, Bootlick, Cotton up, Sop up, Shine up, Take up, Fawn, Soak up, Toady, Imbibe, Draw, Kowtow, Truckle, Absorb, Suck

Accede, Appease, Coddle, Capitulate, Grovel, Acquiesce, Pander, Bootlick, Suck up, Kotow, Scrape, Fawn, Toady, Truckle, Genuflect

Sycophant, Toadyism, Adulator, Footlicker, Arse licker, Brownnose, Sop up, Take up, Fawn, Soak up, Toady, Imbibe, Draw, Kowtow, Suck

Cower, Placate, Browbeat, Accede, Appease, Coddle, Capitulate, Grovel, Acquiesce, Pander, Suck up, Scrape, Fawn, Toady, Genuflect

Moored suck up to is also again called unwritten business.
So I just have to suck up the regular way.
Typically, they suck up machine memory that legitimate programmes use.
Do Anteaters Use Their Long Noses to Suck up Ants?
Almost like a dry sponge to suck up new information.
Comcast suck up NBC would be a worst disaster.
Go suck up to your greedy Emirates buddies.
As it reduces subsidies for gasoline at home all the pent up demand will suck up more crude and more products.
VCE system favouring students who suck up to them setting them up for positions as the dux.
If the Mako Reactor continues to suck up the energy, this fountain will dry up too.

If we kowtow to China today, what will they decide to do tomorrow?.
The very next line is another Nintendo Kowtow to the Christian Right Moment.
And he urges Irish politicians not to kowtow to him.
Instead of standing up for bedrock democratic principles, its leaders reflexively kowtow to fundamentalist demands.
Kowtow Clothing Ltd expressly agrees in writing that such description forms a condition of sale.
When evangelical leaders kowtow to Trump and ignore his bad behavior, they are hypocrites.
House speaker, and members of both parties who are all too eager to kowtow.
Why do so many officials FEAR and kowtow to the Marshfield Airport gang?
Kowtow to the colossal idol of old man Kim, or else.
Leaders resented the magazine because it would not bow or kowtow.