What's the difference between impression and typolite?

Impression

Definition:

(n.) The act of impressing, or the state of being impressed; the communication of a stamp, mold, style, or character, by external force or by influence.
(n.) That which is impressed; stamp; mark; indentation; sensible result of an influence exerted from without.
(n.) That which impresses, or exercises an effect, action, or agency; appearance; phenomenon.
(n.) Influence or effect on the senses or the intellect hence, interest, concern.
(n.) An indistinct notion, remembrance, or belief.
(n.) Impressiveness; emphasis of delivery.
(n.) The pressure of the type on the paper, or the result of such pressure, as regards its appearance; as, a heavy impression; a clear, or a poor, impression; also, a single copy as the result of printing, or the whole edition printed at a given time.
(n.) In painting, the first coat of color, as the priming in house painting and the like.
(n.) A print on paper from a wood block, metal plate, or the like.

Example Sentences:

(1) In addition, the guanosine 3',5'-cyclic monophosphate accumulation response was less impressive in glomeruli than the guanylate cyclase response in IMCD tissue.
(2) Of all materials evaluated, Xantopren Blue and Silene silicone impression materials provided the best results in vivo.
(3) During the interview process, nurse applicants frequently inquire about the availability of such a program and have been very favorably impressed when we have been able to offer them this approach to orientation.
(4) Nwakali, an attacking midfielder, was the player of the Under-17 World Cup in Chile last year, which Nigeria won, and at which his team-mate Chukwueze, a winger, also impressed.
(5) Ketazolam was found to be significantly better than placebo in alleviating anxiety and its concomitant symptomatology as measured by the Hamilton Anxiety Rating Scale, three Physician's Global Impressions, two Patient's Global Impressions, and three Target Symptoms.
(6) Personal experience is recorded with two cases and the positive impressions of this operation.
(7) His words surprised some because of an impression that the US was unwilling to talk about these issues.
(8) It’s the small margins that have cost us.” There is more to it than that, of course, and Rooney gave the impression he had been hard on himself since the Uruguay game.
(9) The most reproducible instrument was the combination of Regisil, an elastic impression material, and a Rinn XCP bite block.
(10) (4) Electrical stimulation by cutaneous devices or implants can give much benefit to some patients in whom other methods have failed and there are indications, not only from anecdote and clinical impression but also now from experimental physiology, that it may benefit by mechanisms of interaction at the first sensory synapse.
(11) This is what we hope is the best golf tournament in the world, one of the greatest sporting events, and I think we will have a very impressive audience and have another great champion to crown this year."
(12) The orchestrated round of warnings from the Obama administration did not impress a coterie of senior Republicans who were similarly paraded on the talk shows, blaming the White House for having brought the country to the brink of yet another "manufactured crisis".
(13) Systolic time intervals measured after profuse sweating can give a false impression of cardiac function.
(14) Watford’s front two have impressed with their hard work, their technical quality and their interplay – a classic strike duo.
(15) The author differentiates between two modes of perception, one is the "expressive" mode, stabilizing and aiming at constancy, the other is the "impressive" mode, penetrating the self and aiming at identification with the percept.
(16) The results obtained by combined superficial freezing and intralesional stibogluconate injection were much more impressive than those obtained by each of the two modalities when used alone.
(17) Findings and impressions of a member of a British medical support group who toured the health services in newly independent Mozambique in September 1975.
(18) Forty impressions were poured with the disinfectant dental stone and a similar number were poured with a comparable, nondisinfectant stone.
(19) Our older population is the most impressive, self-sacrificing and imaginative part of our entire community.
(20) Two recently reported large scale clinical surveys support the impression that the new non-ionic low osmolality iodinated radiographic contrast media are indeed significantly safer for intravascular use than conventional agents.