H6045–עִנְיָן–in.yan

And I applied my heart to seek and search out by wisdom concerning all that is done under the heavens: this grievous occupation hath God given to the children of men to weary themselves therewith.

עִנְיַ֣ן 'in.Yan “[is] a task of”

For all his days are sorrows, and his travail vexation: even in the night his heart taketh no rest. This also is vanity.

עִנְיָנ֔וֹ (עִנְיָנ֔) in.ya.N “task”

For he giveth to a man that is good in his sight wisdom, and knowledge, and joy; but to the sinner he giveth travail to gather and to heap up, that he may give to him that is good in God's sight. This also is vanity and pursuit of the wind.

עִנְיָ֜ן 'in.Yan “a task”

I have seen the travail that God hath given to the sons of men to toil in.

הָֽעִנְיָ֗ן (עִנְיָ֗ן) 'in.Yan “task”

There is one [ergänzt: alone] and without a second; also he hath neither son nor brother: yet is there no end of all his labour, neither is his eye satisfied with riches, and [ergänzt: he saith not], For whom then am I labouring, and depriving my soul of good? This also is vanity and a grievous occupation.

וְעִנְיַ֥ן (עִנְיַ֥ן) 'in.Yan “[is] a task of”

For a dream cometh through the multitude of business, and a fool's voice through a multitude of words.

עִנְיָ֑ן 'in.Yan “business”

or those riches perish by some evil circumstance, and if he have begotten a son, there is nothing in his hand.

בְּעִנְיַ֣ן (עִנְיַ֣ן) 'in.Yan “a business of”

When I applied my heart to know wisdom, and to see the business that is done upon the earth (for also there is that neither day nor night seeth sleep with his eyes),

הָ֣עִנְיָ֔ן (עִנְיָ֔ן) 'in.Yan “task”