As nouns the difference between tribes and nation

is that tribes is while nation is (label) nation.

As nouns the difference between tribes and genus

is that tribes is plural of lang=en while genus is a rank in the classification of organisms, below family and above species; a taxon at that rank.

As nouns the difference between kickboxing and sparring

is that kickboxing is a hybrid martial art derived from Muay Thai, karate and boxing during the 1960s to 1970s; more generally, any stand-up combat sport that combines kicks and punches while sparring is the act of sparring.

As a verb sparring is

present participle of lang=en.

As a noun perfection

is the quality or state of being perfect or complete, so that nothing requisite is wanting; entire development; consummate culture, skill, or moral excellence; the highest attainable state or degree of excellence; maturity; as, perfection' in an art, in a science, or in a system; '''perfection''' in form or degree; fruits in ' perfection .

As a verb perfection

is (obsolete|transitive) to perfect.

As an abbreviation fix is

(clotting factor ix).

As nouns the difference between trestle and horse

is that trestle is a horizontal member supported near each end by a pair of divergent legs, such as sawhorses while horse is a poker variant consisting of five different poker variants, with the rules changing from one variant to the next after every hand or horse can be (variant of basketball).

As verbs the difference between pick and unpick

is that pick is to grasp and pull with the fingers or fingernails while unpick is to undo sewing stitches.

As a noun pick

is a tool used for digging; a pickaxe.

As adjectives the difference between independent and public

is that independent is not dependent; not contingent or depending on something else; free while public is able to be seen or known by everyone; open to general view, happening without concealment.

As nouns the difference between independent and public

is that independent is a candidate or voter not affiliated with any political party, a free thinker, free of a party platform while public is the people in general, regardless of membership of any particular group.

In lang=en terms the difference between incorporate and fluctuate

is that incorporate is to form into a legal company while fluctuate is to cause to vary irregularly.

As verbs the difference between incorporate and fluctuate

is that incorporate is to include (something) as a part while fluctuate is to vary irregularly; to swing.

As an adjective incorporate

is (obsolete) corporate; incorporated; made one body, or united in one body; associated; mixed together; combined; embodied.

As nouns the difference between trespassing and incursion

is that trespassing is the act of walking on private property while incursion is an aggressive movement into somewhere; an invasion.

As a verb trespassing

is present participle of trespass.

As verbs the difference between slacken and debilitated

is that slacken is to gradually decrease in intensity or tautness; to become slack while debilitated is past tense of debilitate.

As an adjective debilitated is

weakened.