diffuse vs lower

To spread over or through as in air, water, or other matter, especially by fluid motion or passive means. 

To be spread over or through as in air, water, or other matter, especially by fluid motion or passive means. 

To fall; to sink; to grow less; to diminish; to decrease 

To decrease in value, amount, etc. 

To reduce operations to single machine instructions, as part of compilation of a program. 

To reduce the degree, intensity, strength, etc., of 

To bring down; to humble 

(lower oneself) To humble oneself; to do something one considers to be beneath one's dignity. 

To let descend by its own weight, as something suspended; to let down 

To reduce the height of 

To depress as to direction 

to pull down 

To reduce (something) in value, amount, etc. 

To make less elevated