In English grammar, an abstract noun is a noun or noun phrase that names an idea, event, quality, or conceptâfor example, courage, freedom, progress, love, patience, excellence, and friendship. An abstract noun names something that can't be physically touched. Contrast with concrete noun.
The adult human brain weighs on average about 1.2â1.4 kg (2.6â3.1 lb), or about 2% of total body weight, with a volume of around 1260 cm3 in men and 1130 cm3 in women, although there is substantial individual variation.
The humans brain makes up what percentage of the total weight of the human body? In a person weighing 150 pounds, the weight of the brain makes up  approximately two percent of the person's weight. The average brain  weighs between 1,300 and 1,400 grams â¦in an adult and 300 to 400  grams in a newborn.