Difference between Difficult and Complicated

DIFFICULT vs COMPLICATED: ADJECTIVE

Not easy to please, satisfy, or manage.
Not easy to comprehend, solve, or explain.
Not easy to endure; full of hardship or trouble; trying.
Requiring considerable effort or skill; not easy to do or accomplish.
Requiring much effort and trouble
Not easy to persuade or convince; stubborn.
Not easy; requiring great physical or mental effort to accomplish or comprehend or endure
Hard to manage or to please; not easily wrought upon; austere; stubborn.
Hard, not easy, requiring much effort
Hard to manage, uncooperative, troublesome; eg. said of a person, a horse, etc.
Hard to control
Hard to do or to make; beset with difficulty; attended with labor, trouble, or pains; not easy; arduous.

Hard to understand or solve; perplexing; puzzling: as, a difficult passage in an author; a difficult question or problem.
Hard to persuade or induce; stubborn in yielding; obstinate as to opinion: as, he was difficult to convince.
Hard to please or satisfy; not compliant; unaccommodating; rigid; austere: as, a person of difficult temper.
Hard to do, perform, or overcome; attended with labor, pains, or opposition; laborious: as, a difficult undertaking.
Not easy; requiring or dependent on effort; hard; troublesome; arduous.
Synonyms Difficult, Hard, Arduous (see arduous), laborious, toilsome; obscure, knotty.
Not easy
To make difficult; impede.
To perplex; embarrass.

Synonyms Complex, etc. See intricate.
Consisting of many parts or particulars not easily separable in thought; difficult to analyze or separate into its parts; hard to understand, explain, etc.; involved; intricate; confused.
Composed of interconnected parts; not simple; complex; complicate.

Thorny, Trying, Unenviable, Delicate, Awkward, Rocky, Rough, Troublesome, Problematical, Arduous, Hard, Problematic, Challenging, Tough, Tricky

Delicate, Arduous, Unwieldy, Daunting, Tedious, Intricate, Straightforward, Messy, Difficult, Cumbersome, Problematic, Tricky, Confusing, Convoluted, Complex

Thorny, Trying, Unenviable, Delicate, Awkward, Rocky, Rough, Troublesome, Problematical, Arduous, Hard, Problematic, Challenging, Tough, Tricky

Delicate, Arduous, Unwieldy, Daunting, Tedious, Intricate, Straightforward, Messy, Difficult, Cumbersome, Problematic, Tricky, Confusing, Convoluted, Complex

It certainly can make for a difficult marriage.
Find it difficult to get around your bathroom?
Metaphors are more difficult to teach than similes.
Times have been so difficult in recent months.
The use of cryptography is complex and difficult.
Slow and difficult process to retrieve boarding pass.
Calamity player, pure summoner would be insanely difficult.
You are saying it is more difficult, music is more difficult?
Some dailies are more difficult than others, a lot more difficult.
Advancing racial equity is already difficult, but then you add the scope and it becomes more difficult.

Too busy to go through a complicated process?
Filing your taxes can be difficult and complicated.
Thanking God does not have to be complicated.
Complicated questions effectively structure to behave can do.
The Volcker Rule and related regulations are complicated.
All others I have seen seem to complicated.
There is nothing complicated about Google Tasks, nor is it designed to handle complicated work projects.
The answers to these questions are complicated, but not as complicated as one might think.
Sounds complicated and it probably is more complicated than it needs be.
Firearms are complicated machines that have complicated mechanisms.