Difference between Absent and Lacking

ABSENT vs LACKING: NOUN

To withhold from being present.
To take or withdraw (one's self) to such a distance as to prevent intercourse; -- used with the reflexive pronoun.
To keep (oneself) away.

To make absent; take or keep away: now used only reflexively, but formerly sometimes otherwise, as by Milton: as, to absent one's self from home; he absented himself from the meeting.
Showing preoccupation
Lost in thought
Stay away or leave
Not in a certain place at a given time; not in consciousness or thought at a certain time; away: opposed to present.
Not existing; wanting; not forming a part or attribute of: as, among them refinement is absent; revenge is entirely absent from his mind.
Absent-minded (which see).

Abstracted, Wanting, Away, Scatty, Remove, Gone, Absentminded, Inattentive, Awol, Truant, Departed, Nonexistent, Lacking, Missing, Devoid

Inexistent, Sans, Poor, Absence, Failing, Flawed, Insufficient, Devoid, Bereft, Wanting, Missing, Absent, Nonexistent, Inadequate, Deficient

Abstracted, Wanting, Away, Scatty, Remove, Gone, Absentminded, Inattentive, Awol, Truant, Departed, Nonexistent, Lacking, Missing, Devoid

Inexistent, Sans, Poor, Absence, Failing, Flawed, Insufficient, Devoid, Bereft, Wanting, Missing, Absent, Nonexistent, Inadequate, Deficient

Spanish Club meetings when the President is absent.
Carrier shall not be liable absent actual negligence.
What molecule was noticeably absent from early earth?
The bolsters common to hotel rooms were absent.
Separate juvenile facilities countrywide are still virtually absent.
Republicans and one Democrat absent or not voting.
In general, the same rules and procedures apply to combined absent voter counting boards that apply to other absent voter counting boards.
It is usually defined by the length of time an individual has been absent from work or is likely to be absent from work.
It simply states absent posterior tibial pulse or absent dorsalis pedis pulse.
Body roundish, skull bones extremely thin, subocular shelf absent; supramaxilla reduced or absent; uniquely modified extrascapular bone.

But what if your Scrum experience is lacking?
However, available data on both groups are lacking.
Intel release lacking support for the Classic environment.
Biggs found the investigative file lacking in information.
Physical accessibility and accommodations tend to be lacking.
Hence, an established, unifying definition is still lacking.
Few men are lacking in capacity, but they fail because they are lacking in application.
If anything is lacking at the outset, every effort will be made to establish what is lacking before trial.
Additionally, failure to pay taxes may result in the company lacking good standing and therefore lacking capacity to sue.
Worn, six bindings lacking paper labels, one lacking paper covering on spine, foxing throughout.