grasping

nouns

understanding with difficulty
"the lecture was beyond his most strenuous graspings"
is derived from
is a type of (narrower)
the cognitive condition of someone who understands
"he has virtually no understanding of social cause and effect"
the act of gripping something firmly with the hands (or the tentacles)
is derived from

adjectives

immoderately desirous of acquiring e.g. wealth
"they are avaricious and will do anything for money"; "casting covetous eyes on his neighbor's fields"; "a grasping old miser"; "grasping commercialism"; "greedy for money and power"; "grew richer and greedier"; "prehensile employers stingy with raises for their employees"