The difference between Complex and Hard

When used as nouns, complex means a problem, whereas hard means a firm or paved beach or slope convenient for hauling vessels out of the water.

When used as adjectives, complex means made up of multiple parts, whereas hard means having a severe property.

Complex is also verb with the meaning: to form a complex with another substance.

Hard is also adverb with the meaning: with much force or effort.

check bellow for the other definitions of Complex and Hard

  1. Complex as an adjective:

    Made up of multiple parts; composite; not simple.

    Examples:

    "a complex being; a complex idea"

  2. Complex as an adjective:

    Not simple, easy, or straightforward; complicated.

  3. Complex as an adjective (mathematics):

    Of a number, of the form a + bi, where a and b are real numbers and i is a square root of −1.

    Examples:

    "complex function"

  4. Complex as an adjective (geometry):

    A curve, polygon or other figure that crosses or intersects itself.

  1. Complex as a noun:

    A problem.

  2. Complex as a noun:

    A network of interconnected systems.

    Examples:

    "uxi [[military-industrial complex]]"

  3. Complex as a noun:

    A collection of buildings with a common purpose, such as a university or military base.

  4. Complex as a noun:

    An assemblage of related things; a collection.

  5. Complex as a noun (psychology):

    A psychological dislike or fear of a particular thing.

    Examples:

    "Jim has a real complex about working for a woman boss."

  6. Complex as a noun:

    An organized cluster of thunderstorms.

  7. Complex as a noun (chemistry):

    A structure consisting of a central atom or molecule weakly connected to surrounding atoms or molecules.

  8. Complex as a noun (math):

    A complex number.

  1. Complex as a verb (chemistry, intransitive):

    To form a complex with another substance

  2. Complex as a verb (transitive):

    To complicate.

  1. Hard as an adjective (of material or fluid):

    Having a severe property; presenting difficulty. Resistant to pressure. Strong. High in dissolved chemical salts, especially those of calcium. Having the capability of being a permanent magnet by being a material with high magnetic coercivity (compare soft).

    Examples:

    "This bread is so stale and hard, I can barely cut it."

  2. Hard as an adjective (personal or social):

    Having a severe property; presenting difficulty. Requiring a lot of effort to do or understand. Demanding a lot of effort to endure. Severe, harsh, unfriendly, brutal. Difficult to resist or control; powerful.

    Examples:

    "a hard problem"

    "a hard life"

    "a hard master;  a hard heart;  hard words;  a hard character"

    "don't be so hard on yourself"

  3. Hard as an adjective:

    Unquestionable.

    Examples:

    "'hard evidence"

  4. Hard as an adjective (of a road intersection):

    Having a comparatively larger or a ninety-degree angle.

    Examples:

    "At the intersection, there are two roads going to the left. Take the hard left."

  5. Hard as an adjective (slang, vulgar, of a [[male]]):

    Sexually aroused.

    Examples:

    "I got so hard watching two hot guys wrestle each other on the beach."

  6. Hard as an adjective (bodybuilding):

    Having muscles that are tightened as a result of intense, regular exercise.

  7. Hard as an adjective (phonetics, uncomparable):

    Plosive. Unvoiced Velarized or plain, rather than palatalized

    Examples:

    "There is a hard ''c'' in "clock" and a soft ''c'' in "centre"."

    "'Hard ''k'', ''t'', ''s'', ''ch'', as distinguished from soft, ''g'', ''d'', ''z'', ''j''."

    "The letter m ru ж in Russian is always hard."

  8. Hard as an adjective (arts):

    Having a severe property; presenting a barrier to enjoyment. Rigid in the drawing or distribution of the figures; formal; lacking grace of composition. Having disagreeable and abrupt contrasts in colour or shading.

  9. Hard as an adjective (uncomparable):

    In the form of a hard copy.

    Examples:

    "We need both a digital archive and a hard archive."

  1. Hard as an adverb (manner):

    With much force or effort.

    Examples:

    "He hit the puck hard up the ice."

    "They worked hard all week."

    "At the intersection, bear hard left."

    "The recession hit them especially hard."

    "Think hard about your choices."

  2. Hard as an adverb (manner):

    With difficulty.

    Examples:

    "His degree was hard earned."

    "The vehicle moves hard."

  3. Hard as an adverb (obsolete):

    So as to raise difficulties.

  4. Hard as an adverb (manner):

    Compactly.

    Examples:

    "The lake had finally frozen hard."

  5. Hard as an adverb (now, archaic):

    Near, close.

  1. Hard as a noun (countable, nautical):

    A firm or paved beach or slope convenient for hauling vessels out of the water.

  2. Hard as a noun (uncountable, drugs, colloquial, slang):

    crack cocaine.

  3. Hard as a noun (motorsports):

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