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Nice. Here's another: "Dominate" is a verb. "Dominant" is an adjective. Dominate is something you DO. Dominant is something you ARE. LeBron James is not dominate -- he's dominant. BECAUSE he dominates.
Ahem... Merriam-Webster Online: jell: Date 1869. intransitive verb. 1. to come to the consistency of jelly; congeal , set 2. to take shape and achieve distinctness; become cohesive. transitive verb. to cause to jell gel: Date 1917. intransitive verb. 1. to change into or take on the form of a gel; set 2. JELL 2 (meaning, go look at the second definition of jell). Oxford English Dictionary: jell: Date 1830-1840. 1. intransitive verb. To become a jelly; to congeal or jelly. Also figuratively, to take definite or satisfactory shape; = CRYSTALLIZE. Compare to GEL 2. transitive verb. JELLIFY; Also figuratively, to give shape to; to make clear and definite. Hence participle jelled. gel: Date 1917. intransitive verb. To become a gel; figuratively, JELL. Hence participle gelled. Webster’s New World: jell: No date. intransitive, transitive verb. 1. a) to become or cause to become jelly. b) to become or cause to become somewhat firm, as gelatin does; set. 2. [Informal] to take or cause to take definite form; crystallize. [plans that haven't jelled yet] gel: No date. intransitive verb. 1. to form a gel; jellify. 2. [British] JELL 2. They are functionally interchangeable, though you could make an argument about British or US usage, though given the organic nature of language it's really hard to say that there are absolute rules in terms of usage. However for the purposes of the English language in general, both are acceptable. In other words, whatever works for you... PSA : The Rockets are "jelling" OR "gelling"...
It says right there in Oxford English Dictionary... "intransitive verb. To become a gel; figuratively, JELL." When speaking figuratively, it's "jell".