proficiency

As nouns the difference between speciality and proficiency

is that speciality is while proficiency is ability, skill, competence.

As nouns the difference between proficiency and understanding

is that proficiency is ability, skill, competence while understanding is (uncountable) mental, sometimes emotional process of comprehension, assimilation of knowledge, which is subjective by its nature.

As an adjective understanding is

showing compassion.

As a verb understanding is

.

As nouns the difference between potency and proficiency

is that potency is strength while proficiency is ability, skill, competence.

As nouns the difference between proficiency and goo

is that proficiency is ability, skill, competence while goo is (uncountable|informal) any semi-solid or liquid substance; especially one that is sticky, gummy or slippery; frequently of vague or unknown composition, or a bodily fluid or goo can be an example of baby talk.

As a verb goo is

to apply goo to something or goo can be to produce baby talk.

Proficiency is a related term of penchant.

As nouns the difference between proficiency and penchant

is that proficiency is ability, skill, competence while penchant is taste, liking, or inclination (for).

As nouns the difference between level and proficiency

is that level is leaf (part of a plant) while proficiency is ability, skill, competence.

As nouns the difference between sufficiency and proficiency

is that sufficiency is quality or condition of being sufficient while proficiency is ability, skill, competence.

As nouns the difference between conversancy and proficiency

is that conversancy is the condition of being conversant while proficiency is ability, skill, competence.

As a noun proficiency

is ability, skill, competence.

As an adjective sufficient is

equal to the end proposed; adequate to wants; enough; ample; competent; as.

As a determiner sufficient is

the smallest amount needed.

As nouns the difference between abilities and proficiency

is that abilities is while proficiency is ability, skill, competence.