Term: barrier: any condition that makes it difficult to make progress or to achieve an objective
Broader: obstacle: something immaterial that stands in the way and must be circumvented or surmounted | Unrelated: backbend: an acrobatic feat in which the trunk is bent backward from a standing position until the hands touch the floor
Broader: obstacle: something immaterial that stands in the way and must be circumvented or surmounted | Unrelated: bowels: the center of the Earth
Broader: obstacle: something immaterial that stands in the way and must be circumvented or surmounted | Unrelated: skimming: failure to declare income in order to avoid paying taxes on it
Broader: obstacle: something immaterial that stands in the way and must be circumvented or surmounted | Unrelated: anomalopidae: a family of fish including: flashlight fishes
Broader: obstacle: something immaterial that stands in the way and must be circumvented or surmounted | Unrelated: plant hopper: related to the leafhoppers and spittlebugs but rarely damages cultivated plants
Broader: obstacle: something immaterial that stands in the way and must be circumvented or surmounted | Unrelated: voyage: a journey to some distant place
Broader: obstacle: something immaterial that stands in the way and must be circumvented or surmounted | Unrelated: moonseed: plant of the family Menispermaceae having red or black fruit with crescent- or ring-shaped seeds
Broader: obstacle: something immaterial that stands in the way and must be circumvented or surmounted | Unrelated: deep: the central and most intense or profound part
Broader: obstacle: something immaterial that stands in the way and must be circumvented or surmounted | Unrelated: implementation: the act of implementing (providing a practical means for accomplishing something); carrying into effect
Broader: obstacle: something immaterial that stands in the way and must be circumvented or surmounted | Unrelated: logwood: spiny shrub or small tree of Central America and West Indies having bipinnate leaves and racemes of small bright yellow flowers and yielding a hard brown or brownish-red heartwood used in preparing a black dye