abbreviation, absorbed attention, absorption, abstraction, accelerando, acceleration, advertence, advertency, agglutination, aggravation, alertness, application, approach, ardor, assiduity, assiduousness, astriction, astringency, asymptote, attention, attention span, attentiveness, awareness, beefing-up, blowing up, blowup, bottleneck, brown study, bulldog tenacity, care, centering, centralism, centralization, cervix, circumscription, close study, clumping, clustering, coarctation, collision course, compactedness, compaction, compression, compressure, concentralization, concentrate, concourse, concretion, concurrence, condensation, confluence, conflux, congress, consciousness, consideration, consolidation, constancy, constriction, constringency, contemplation, contemplativeness, contraction, contracture, convergence, converging, crossing, curtailment, debate, decoction, decrease, deep study, deep thought, deepening, deliberation, densification, diligence, diminuendo, distillate, distillation, dogged perseverance, doggedness, ear, earnestness, elixir, endurance, energeticalness, energy, engagement, engrossment, enhancement, enthrallment, essence, exacerbation, exaggeration, explosion, expression, extract, extraction, fervor, fidelity, firmness, firmness of mind, fixedness, flintiness, focalization, focus, focusing, funnel, hardening, heating-up, heed, heedfulness, heightening, hourglass, hourglass figure, hub, immersion, indefatigability, industriousness, industry, inflexibility, information explosion, infusion, insistence, insistency, intensification, intentiveness, intentness, involvement, isthmus, knitting, laboriousness, loyalty, magnification, meditation, meeting, melancholy, mindfulness, monomania, musing, mutual approach, narrow place, narrowing, narrowing gap, neck, note, notice, observance, observation, obsession, obstinacy, patience, patience of Job, pensiveness, permanence, perseverance, persistence, persistency, pertinaciousness, pertinacity, pickup, plodding, plugging, pooling, population explosion, preoccupation, pressing, profound thought, puckering, purification, pursing, quintessence, radius, rapt attention, redoubling, reduction, refinement, reflectiveness, regard, regardfulness, reinforcement, relentlessness, remark, rendering, rendition, resolution, respect, reverie, rigidity, sedulity, sedulousness, settledness, shortening, single-mindedness, singleness of purpose, slogging, soaking, solidification, speculativeness, speedup, spirit, spokes, squeezing, stability, stamina, staunchness, staying power, steadfastness, steadiness, steeliness, steeping, step-up, stick-to-itiveness, stranglement, strangulation, strengthening, strenuousness, striction, stricture, stubbornness, studiousness, study, submersion, systole, tangent, tenaciousness, tenacity, thought, thoughtfulness, tightening, tirelessness, trueness, unremittingness, unsparingness, unswerving attention, unyieldingness, vehemence, wasp waist, wistfulness, wrinkling, zealousness